Standort in Deutschland, wo man günstige und qualitativ hochwertige Kamagra Ohne Rezept Lieferung in jedem Teil der Welt zu kaufen.
Wenn das Problem der Verringerung der Potenz berührt mich persönlich war ich schockiert, dass das passiert gerade mit mir cialis Übrigens jeder leisten und gibt eine sofortige Wirkung ohne Hausarbeiten Anwendungen.
for the Management of
Developed by the Guideline Subcommittee of the
European Dermatology Forum
(Switzerland) Dr. Rino Cerio, London (UK) Prof. Dr. Bernard Cribier, Strasbourg (France) Prof. Dr. Carlos Ferrándiz Foraster, Badalona (Spain) Prof. Dr. Alberto Giannetti, Modena (Italy) Prof. Dr. Laios Kemény, Szeged (Hungary) Prof. Dr. Helmut Kerl, Graz (Austria) Prof. Dr. Bernt Lindelöf, Stockholm (Sweden) Prof. Dr. Martino Neumann, Rotterdam (The Netherlands) Prof. Dr. Wolfram Sterry, Berlin (Germany) Prof. Dr. Eggert Stockfleth, Berlin (Germany)
Members of EDF Guideline
Prof. Dr. Martine Bagot, Créteil (France) Prof. Dr. Lasse Braathen, Bern (Switzerland) Prof. Dr. Sergio Chimenti, Rome (Italy) Prof. Dr. José Luis Diaz-Perez, Bilbao (Spain) Prof. Dr. Vladimir Hegyi, Bratislava (Slovak Republic) Prof. Dr. Lajos Kemény, Szeged (Hungary) Prof.Dr. H.C. Korting, Munich (Germany) Prof. Dr. Gillian Murphy, Dublin (Ireland) Prof. Dr. Martino Neumann, Rotterdam (The Netherlands) Prof. Dr. Tony Ormerod, Aberdeen (UK) Prof. Dr. Annamari Ranki, Helsinki (Finland) Prof. Dr. Fenella Wojnarowska, Oxford (UK)
Chairman of EDF Guideline Committee:
List of conflicts of interest:
is a speaker of symposia sponsored by Shire
Prof. Dr. Eggert Stockfleth, Berlin is a speaker for 3M Pharmaceuticals, Shire, (Germany)
Guideline for the management of actinic keratoses
This guideline is based on a previous document prepared by E. Stockfleth et al. prepared for the German "Arbeitsgemeinschaft Dermatologische Onkologie - Deutsche Krebsgesellschaft" and has been modified by the Guidelines Committee of the European Dermatology Forum. It reflects the data available at the time the report was written. Future studies may require alterations of the conclusions or recommendations in this report. The level of evidence of published studies is based on the criteria from Sackett (http://www.cebm.net/levels_of_evidence.asp).
Table of contents
Surgical excision, dermabrasion and curettage
This guideline for the management of actinic keratoses (AK) has been prepared by the AK subcommittee of the Guidelines Committee of the European Dermatology Forum. It represents an evidence-based guidance for treatment for actinic keratoses, with identification of the level of evidence available at the time of preparation, and contains a brief overview of epidemiological aspects and clinical management of patients with AK. A variety of different and well-accepted therapeutic modalities are used in the
management of AK. This guideline aims to aid in the selection of the most appropriate treatment option for individual patients.
1 Definition and Pathogenesis
Actinic keratoses (AKs) are defined as keratotic macules, papules or plaques with superficial scale on a red base, occurring on areas extensive damage throughsunlight. They should be classified as in situ squamous cell carcinomas (SCC) [Ackerman 2003, Heaphy & Ackerman 2000]. Histopathologically an intraepidermal proliferation of atypical keratinocytes can be observed. AKs are mainly caused by non-ionising radiation, especially through ultraviolet light associated with chronic sun exposure. While UV-A (320 - 400 nm) induced photooxidative stress indirectly induces characteristic DNA mutations, the spectrum of UV-B (290 - 320 nm) irradiation directly results in the formation of cyclobutane (thymin) dimer formation and C ? T or CC ? TT transitions in DNA and RNA. In the absence of appropriate repair mechanisms, these DNAchanges represent the initiation of keratinocyte mutations which can progress into the development of AKs Brash et al. 1996]. Other factors like repeated iatrogenic exposure to UV-A with or without combination with psoralenes, X-rays or radioisotopes are known to induce AKs. Human papilloma-viruses (HPV) play a role as co-carcinogen in the ethiopathogenesis of AKs [Lober & Lober 2000, Stockfleth et al. 2004a]. The association between cutaneous HPV types and skin carcinogenesis is well known since 1978 in patients with epidermodysplasia verruciformis [Orth et al. 1978]. In AKs often cutaneous HPV types and rarely genital types have been detected [Harwood & Proby 2002]. Tumour-inducing effects have been also be shown for viral E6 protein of cutaneous HPVs. E6 interacts with pro-apoptotic Bak-protein and therefore inhibits apoptosis [Jackson & Storey 2000, Jackson et al. 2000]. Other factors include the skin phototype of the individual, genetic factors, chronic immunosupression, history of arsenic exposure. AKs can occur as single lesion or affect an entire field such as sun exposed areas on the forehead or the back of the hand (syn. field cancerisation) [Braakhuis et al. 2003]. Cancer-related molecular alterations are found in both, AK and SCC. This genetic link supports the malignant nature of AKs from its inception. The transformed keratinocytes show a high mutation rate of the tumour-suppressor gene p53 and expression of telomerase [Callen et al. 1997, Mittelbronn et al. 1998]. Additionally, the similar chromosomal aberrations have been described for invasive SCC typical and AK [Ashton et al. 2003].
Epidemiological data show a high occurrence rate of AKs in populations with skinphototype I-III and an increase of AKs in the last decades, worldwide. Regions with higher UV exposure have a higher prevalence of AKs. In Europe a prevalence of 15 % in men and 6 % in women has been documented in a recent report from the U.K. Over the age of 70 years, 34 % of males and 18 % of females were found to have AKs [Memon et al. 2000]. The USA show prevalences between 11 - 26 % [Salasche 2000], and in Australia (Queensland) a very high prevalence of AKs (55 % of men between 30 - 70 years showed AKs, as opposed to 37 % of women) has been reported [Frost et al. 2000]. In addition to sex, gender and age, other risk factors are known. Geographical factors such as altitude and latitude, increased vacational and recreational sunexposure. a history of severe sunburns in childhood, genetic disorders
(xeroderma pigmentosum), and immunodeficiency contribute to the development of actinic keratoses. Clinically the affected individual often presents with the characteristic signs of dermatoheliosis such as freckles, solar lentigines and rhytides. High-risk-AKs occur mainly in immunosuppressed patients [Schmook & Stockfleth 2003]. Organ-transplanted patients have a 250 fold higher risk to develop AKs and a 100 fold higher risk to develop invasive SCCs [Stockfleth et al. 2002a, Ulrich et al. 2002]. While about 40 % of immunosuppressed patients develop an invasive SCC only approximately 10 % (6 - 16 %) of immunocompetent patients with AK's show this progression. [Glogau 2000, Stockfleth et al. 2002a]. In conclusion, the incidence of AKs is increasing such that millions of patients are affected worlwide making actinic keratoses the most frequent carcinoma in situ in man.
3 Clinical aspects
Typical AKs are skin-coloured to reddish-brown scaly macules, papules or plaques occurring in areas of chronic sunexposure, especially on face, forehead, scalp, ears, neck, décolleté, arms, dorsum of hands, and lower lips. Lesions size ranges from a few millimetres up to 2 centimetres or more in diameter. AKs rarely develop as solitary lesions; in fact multiple lesions are commonly present (field cancerisation). A clinical classification is illustrated in Table 1.
*) Overlapping between subtypes may be observed
No distinct clinical boundaries exist between AKs and SCC. It has been reported that before AKs progress to invasive SCC, they may become inflamed and painful [Berhane et al. 2002]. Diagnosis of AKs is based upon the typical clinical aspects. Histological confirmation is necessary, when clinical doubts exist or when special forms of treatment are considered. A biopsy which includes the dermis is required if deeper involvement needs to be excluded. Dermoscopy can be helpful in the differential diagnosis of pigmented actinic keratosis vs. lentigo maligna melanoma and superficial and/or pigemented basal-cell carcinoma. Other techniques, including confocal scanning laser microscopy, have been utilised in serial clinical investigations. [Chung et al. 2004].
The histological criteria of AKs are summarized in Table 2.
- Focally atypical keratinocytes (large pleomorphic nuclei,
hyperchromatic nuclei) in the basal layer of the epidermis
- Alternation of ortho- and parakeratosis
- Hyperplasia (or sometimes atrophy) of the epidermis
- Rete ridges arranged in buds or columns
- Alternation of ortho- and parakeratosis
- Neoplastic cells spare both acrosyringia and acrotrichia
- Atypical epidermal keratinocytes involve mostly the lower half of the
epidermis. Sometimes with focal involvement of the entire thickness of the epidermis
- Atypical keratinocytes extend along adnexal epithelia
- Dyskeratotic cells and mitotic figures
- Lymphocytic infiltrate of variable density
The lichenoid subtype of AK is accompanied by dense bandlike infiltrates of lymphocytes in the stratum papillare. Acantholytic dyskeratotic cells above suprabasal clefts are found in acantholytic AKs. The degree of intraepidermal involvement by keratinocytic atypia is graded as mild (AK I), moderate (AK II) or severe (AK III). The classification of AKs takes into consideration that AK is an early stage of cancer and that both, AKs and SCC are stages in the evolution of a continuous process characterised by the proliferation of atypical keratinocytes. On histopathologic grounds alone, AK and SCC are indistinguishable in the epidermal layer, and AKs fulfill all criteria for SCC. Both contain atypical keratinocytes with loss of polarity, nuclear pleomorphism, disordered maturation, and increased numbers of mitotic figures [Ackerman 2003]. AK and SCC are frequently contiguous with one another. It is important to emphasize that in a study of >1000 SCC on sun-damaged skin nearly 100% of these lesions contained histopathologic changes of AK at the periphery [Guenthner et al. 1999].
5 Treatment options
It is impossible to predict which AK will become thicker or more invasive with a potential for destructive growth and risk for metastases, i.e. develop into metastatic squamous cell carcinomas. AKs should therefore be treated. In the decision which therapy should be chosen the following factors play a major role: duration and course of lesions, localisation and extend of disease, solitary or multiple AKs, age, and co-morbidity, mental condition and compliance of the patient, pre-existing (skin) cancer and as well as the presence of other risk factors (especially
immuno-suppression). When considering treatment options for actinic keratoses, there is a great variety of accepted methods. When using non-surgical treatment modalities an exemplary probe biopsy for histological diagnosis may be indicated before therapy. The following treatment options are not listed in a ranked order.
5.2 Surgical excision, dermabrasion and curettage
Excision of AKs is not routinely used and only chosen if invasive SCC is suspected or recurrent lesions are present. Shave excision is frequently used for AK. Sutures are not necessary and a histologic diagnosis can be provided [Emmet & Broadbent 1987]. Similarly, curettage may be used alone or in conjunction with electro-surgery or cryotherapy with excellent cure rates [Dinehart 2000]. Curettage may also be combined with zinc chloride as Schreus-method which is also a very effective method for the treatment of field cancerisation [Cerburkovas et al. 2001]. Dermabrasion is especially useful for larger areas of AK on the scalp [Coleman 1996]. All these methods require local anesthesia and may leave epidermal changes or scarring.
Cryotherapy is the most common treatment for AKs, especially for the management
of multiple AKs [Drake et al. 1995, Dinehart 2000, Zouboulis 1999]. Cryotherapy is
available in techniques using liquid nitrogen or as spray or contact-cryotherapy. Field
cancerisation, which describes a chronically sun-damaged area can be treated by
cryo-peeling [Chiarello 2000]. Cryotherapy is not standardised concerning frequency,
duration, intensity and definitive specification of temperature in the frozen tissue. As
a non-specific technique, cryotherapy destroys atypical, but also normal cells by
disruption and separation of the epidermis from the dermis. Pain, redness, edema
and blistering can occur during and after treatment. Scarring and hypo- or
hyperpigmentation is commonly observed.
Though cryotherapy is often used, controlled studies are missing. Complete
responses differ from 75 % to 98 % [Szeimies et al. 2000 - level of evidence 2b
Graham 2001 - level of evidence 3a
]; the recurrence rates of AKs have been
estimated from 1.2 % to 12 % within a 1-year follow up period [Chiarello 2000 - level of evidence 3a
, Lubritz et al. 1982 - level of evidence 3b
5.4 Chemical peeling
Chemical peeling is a destructive method through the application of caustic agents
like trichloroacetic acid, alpha-hydroxy acids, zinc-chloride or phenolic acid. Chemical
peeling can be a useful alternative for treatment of extensive facial AK [Witheiler
1997 - level of evidence 2c
]. The efficacy of chemical peelings depends on the
agent used and is quoted to be round about 75 %; recurrence rates are from 25 - 35
% within one year after therapy. Side effects of chemical peelings include pain,
inflammation, pigmentary alterations, and the risk of scarring [Lawrence et al. 1995 - level of evidence 2c
, Otley & Roenigk 1996, Stone 1998 - level of evidence 3b
Near infrared laser systems like carbon dioxide (CO2) or Erbium-YAG lasers are
indicated in special cases for AKs. Both are ablative laser systems and can be used
for single lesions as well as full face resurfacing. Full face laser resurfacing provides
long-term effective prophylaxis against AKs and may reduce the incidence of AKs
related SCC [Iyer et al 2004]. Adverse events are pain, inflammation, pigmentary
changes and scarring as well as delayed healing and postinflammatory erythema.
Although complete remission is documented from 90 to 91% recurrence rates for
single lesions range from 10 to 15% within 3 to 6 months [Wollina et al. 2001 - level
of evidence 3b
, Yu et al. 2003]. Disappointing results reported in earlier literature
maybe related to technical aspects, as the outcomes of full face resurfacing are
strongly user dependend. [Fulton et al. 2000]. The expert opinion is that in skilled
hands there is a place for CO2/Erbium-YAG laser in the management for AKs and the
treatment of actinic cheilitis.
The treatment of AKs with X-rays is considered obsolete due to the cocarcinogenic effect of X-rays.
5.7 Photodynamic therapy
Topical photodynamic therapy (PDT) acts through the selective destruction of atypical
keratinocytes (depth of penetration 3-4 mm) through light activation of a
photosensitiser in the presence of oxygen. The neoplastic cells accumulate more
photosensitiser than normal cells. The photosensitiser generates reactive oxygen
species upon illumination, which results in selective photochemical and photothermal
effects on the irradiated tissue. The most commonly used precursors of
protoporphyrin IX are 5-aminolevulinic acid (ALA) and its derivatives like the new
lipophilic agent methyl aminolevulinate (MAL). MAL-PDT is applied as a cream under
occlusion for 3 hours before illumination with high intensityred light. For Europe, the
European Medical Evaluation Agency (EMEA) labelled MAL as indication for AK. The
clinical experience in AK patients receiving MAL-PDT shows complete response rate of
70-78% after a single treatment session and 90% after two treatment sessions one
week apart. Negative effects of PDT are local pain, risk of photosensitivity (mainly for
ALA) and time delay between application of cream and treatment. Photodynamic
therapy in comparison to cryotherapy shows significantly better cosmetic results -
(evaluation by patients and doctors) [Szeimies et al. 2000 - level of evidence 2b
Szeimies et al. 2002 - level of evidence 2b
, Morton et al. 2002; Pariser et al. 2003
- level of evidence 2b
, Schmook & Stockfleth 2003]. Advantages of PDT include the
selective absorption and treatment of sub-clinical lesions and the flourescence of the
photosensitiser can be visualised using Wood´s light before the initiation of therapy
(Freeman et al. 2003). On the other hand, the costs of treatment are considerably
higher compared to cryotherapy.
Imiquimod 5%, a member of a novel class of immune response modifiers (IRMs), is a
toll-like receptor (TLR) 7-agonist and stimulates the immune response by induction,
synthesis and release of cytokines. These cytokines increase the cellular immunity.
Therefore it has an indirect antiviral and anti-tumoral potency [Hemmi et al. 2002,
Miller et al. 1999]. Topically applied imiquimod causes a local skin reaction, including
erythema, itching, and burning, that is generally mild to moderate in intensity - also
fever can occur (especially in larger treated areas and/or mucosal application). Apart
from the capability of imiquimod to 'light-up' sub-clinical Aks, Imiquimod is effective
and safe in patients with AKs. Response rates show complete remission in 84 %; a
recurrence rate of 10 % within 1-year follow up and 20 % within 2-years follow up
[Stockfleth et al. 2002b - level of evidence 2b
, Stockfleth et al. 2004b - level of
]. A randomised, double-blind, placebo-controlled study in 436 patients
with actinic keratoses showed a complete resolution of all lesions in 45.1 % (vs. 3.2
% placebo) and a partial reduction of actinic keratoses in 59.1 % (vs. 11.8 %
placebo) after a treatment period of 16 weeks (twice per week) [Lebwohl et al. 2004
- level of evidence 2b
]. A label for the indication of AK through the EMEA is in
process. Imiquimod is labelled for the indication of superficial basal cell carcinoma in
the USA, Australia and Europe.
5.9 Topical 5-fluorouracil
5-fluorouracil (5-FU) is a topical chemotherapeutic antimetabolite that destroys
clinical foci via interference with DNA and RNA by blocking the methylation reaction
of deoxyuridylic acid to thymidylic acid. Hereby 5-FU interferes with the synthesis of
DNA and, to a lesser extent, inhibits the formation of RNA. 5-FU can be used for the
treatment of multiple lesions and is applied twice a day (2 - 4 weeks). These effects
may cause life-risk complications if dihydropyrimidine-dehydrogenase-deficency
exists [Johnson et al. 1999]. Topical 5-FU can results in severe dermatitis with
wound infections, pruritus, pain and ulceration with scarring and the application is of
limited help in the therapy of extensive AKs. A reduction of severe side effects can be
realised by using intermittent "pulse" 5-FU therapy which is a less intensive way of
employing 5-FU and may be of value in patients unwilling to accept the erosions and
discomfort that accompany the traditional course of daily 5-FU applications [Epstein
1986 - level of evidence 3b
]. For localised disease, clearance rates of
approximately 50 % and recurrence rates up to 55 % have been reported with 5-FU
[Gupta 2002, Lawrence et al. 1995 - level of evidence 2c
, Levy et al. 2001 - level
of evidence 3b
]. Meanwhile, new formulations with different concentrations and
galenics of 5-FU are under clinical investigations. [Jorizzo et al. 2002 - level of
, Levy et al. 2001 - level of evidence 3b
, Loven et al. 2002 - level of
, Robins & Gupta 2002].
Retinaldehyde is a natural derivative of vitamin A; it has effects similar to retinoic
acid [Sass et al. 1996]. Besides counteracting the UV-induced vitamin A deficiency of
the epidermis, topical retinaldehyde may have an antioxidant effect [Sachsenberg-
Studer 1999, Sorg et al. 2001] and decreases the number of sunburn cells. A
placebo-controlled randomised study documents that systemic administered
etretinate reduces AKs in 85 % [Moriarty et al. 1982 - level of evidence 2b
publications show that the epidemiological characteristics of AKs were not modified
by the application of retinaldehyde and that retinaldehyde has no prophylactic effects
on the development of AKs [Campanelli & Naldi 2002 - level of evidence 3a
Humphreys et al. 1996 - level of evidence 3a
]. Side effects of topically applied
retinoids are increased sensitivity to sunlight, erythema, erosions, pruritus and pain.
Retinoids can be also administered orally especially in patients who develop large
numbers of skin cancers [Berretti & Grupper 1986]. Systemic therapy can be
considered for high risk patients - such as patients with inherited disorders such as
xeroderma pigmentosum (abnormal repair of UV-induced DNA damage), nevoid basal
cell carcinoma syndrome (tumour suppressor gene abnormality) or in after organ-
transplant recipients with chronic immunosuppression [DiGiovanna 2001, McNamara
et al. 2002 - level of evidence 3a
]. The use of retinoids for the treatment of AKs is
currently an off-label use.
5.11 Diclofenac in hyaluronic acid gel
Within the last years antineoplastic properties of selective inhibitors of cyclo-
oxygenase 2 (COX-2 have increasingly been investigated). These new agents inhibit
prostaglandin E2 synthesis (PGE2) which is known to suppress the production of
immune-regulatory lymphocytes, T-and B-cell proliferation and the cytotoxic activity
of natural killer cells. Furthermore activation of COX-2 has implications for tumour
angiogenesis through up-regulation of vascular endothelial growth factor (VEGF),
which is a potent angiogenic factor required for tumor growth and metastases [Jung
et al. 2003]. Apart from its affinity to the inducible COX-2, NSAIDs have been
demonstrated to activate peroxisome proliferator-activated-receptor-gamma (PPAR-
gamma) which decreases cancer cell proliferation. Topical diclofenac is applied in
hyaluronic acid (HA). Several randomised, double blind, HA gel vehicle-controlled
clinical studies have evaluated the efficacy of topical diclofenac HA gel in patients
with AK. The 30-day interval between the end of treatment and the evaluation of
efficacy was due to earlier findings stating a significant advantage for diclofenac HA
gel over placebo, when efficacy was evaluated 4 weeks after the end of treatment.
The product significantly reduced lesions when applied for 60 or 90 days bid. A
double-blind, randomised, placebo-controlled multicenter study showed responding
rates of 79 % (verum group) versus 45 % in the placebo group; a complete healing
was seen in 50 % (verum group) versus 20 % in the control group (p<0,001 %)
[Rivers et al. 2002 - level of evidence 2b
]. Other controlled studies showed similar
effects [Gebauer et al. 2003 - level of evidence 2b
, Wolf et al. 2001 - level of
]. Adverse effects were skin related and mild to moderate in severity
(pruritus, erythema, dry skin, hyp- and paraesthesia). Systemic bioavailability of
diclofenac was demonstrated to be considerably lower after topical application than
after systemic administration and the drug demonstrated a good safety profile.
Prevention of AKs is an important part in AK-management [Armstrong & Kricker 2001, Thompson 1993]. Education of patients (UV-protection, self-examination, and detection of early lesions) is particularly important. AK is an ongoing disease that requires frequent follow-up (half-yearly to yearly) and long-term management.
7 Summary of Recommendations
It has to be declared that the physician who cares about the patient has always to
keep in mind the inidividual needs of the patient. The physician has to respect the individuality of the patient and has to see the guideline as recommendation and supporting device for therapeutical strategies and efforts.
Prof. Dr. Lasse R. Braathen, Bern (Switzerland)
Prof. Dr. Bernard Cribier, Strasbourg (France)
Prof. Dr. Carlos Ferrándiz Foraster, Badalona (Spain)
Prof. Dr. Alberto Giannetti, Modena (Italy)
Prof. Dr. Laios Kemény, Szeged (Hungary)
Prof. Dr. Bernt Lindelöf, Stockholm (Sweden)
Prof. Dr. Martino Neumann, Rotterdam (Netherlands)
Prof. Dr. Wolfram Sterry, Berlin (Germany)
Prof. Dr. Eggert Stockfleth, Berlin (Germany)
Guideline development standard operating Procedure of EDF
Foundation of subcommittee for specific guidelines,
Identify all existing guidelines for the specific guideline
(active process: literature survey plus contact to
Select the guidelines with highest quality. Criteria for
selection: 1. Availability of strength of evidence2. Availability of strength of recommendation3. Evidence of mechanics of literature review
Identification/nomination of additional 50 % EDF
members for the EDF-GsubC from amongst the authors of the best guidelines
Nomination of chairperson for EDF-GSubC from the
Consider involvement of other disciplines and patients´ organisations
1. to decide the author of the first draft and to discuss
the present guidelines, their strengths and weaknesses
2. 6 months later to discuss the draft (consensus
Circulate the guideline draft to national dermatological societies for comments
Circulate final version for approval among members of
Deliver final version to EDF guideline chairperson
Send guideline for official approval to UEMS (formal
Distribute guideline for in advance information to EDF members and National Dermatological Societies
Publication 1. on EDF homepage2. in European Journal of Dermatology, British Journal
of Dermatology and Journal of Deutsche Dermatologische Gesellschaft
Ackerman AB. Solar keratosis is squamous cell carcinoma. Arch Dermatol 2003; 139:
Armstrong BK, Kricker A. The epidemiology of UV induced skin cancer. J Photochem
Ashton KJ, Weinstein SR, Maguire DJ, Griffiths LR. Chromosomal aberrations in
squamous cell carcinoma and solar keratoses revealed by comparative genomic hybridization. Arch Dermatol 2003; 139: 876-882.
Berretti B, Grupper C. Retinoids in the treatment of epithelial skin tumors. Ther
Berhane T, Halliday GM, Cooke B, Barnetson RSC. Inflammation is associated with
progression of actinic keratoses to squamous cell carcinomas in humans. Br J Dermatol 2002; 146: 810-815.
Braakhuis BJM, Tabor MP, Kummer JA, Leemans CR, Brakenhoff RH. A genetic
explanation of Slaughter's concept of field cancerization: Evidence and clinical implications. Cancer Res 2003; 63: 1727-1730.
Brash DE, Ziegler A, Jonason AS, Simon JA, Kunala S, Leffell DJ. Sunlight and
sunburn in human skin cancer: p53, apoptosis, and tumor protection. J Invest Dermatol Symp Proc 1996; 1: 136-142.
Callen JP, Bickers DR, Moy RL. Actinic keratoses. J Am Acad Dermatol 1997; 36: 650-
Campanelli A, Naldi L. A retrospective study of the effect of long-term topical
application of retinaldehyde (0.05%) on the development of actinic keratosis. Dermatology 2000; 205: 146-152.
Cerburkovas O, Krause M, Ulrich J, Bonnekoh B, Gollnick H. Disseminated actinic
keratoses. Comparison of topical photodynamic therapy with 5-aminolevulinic acid and topical 5% imiquimod cream. Hautarzt 2001; 52: 942-946.
Chiarello SE: Cryopeeling (extensive cryosurgery) for treatment of actinic keratoses:
An update and comparison. Dermatol Surg 2000; 26: 728-732.
Chung VQ, Dwyer PJ, Nehal KS, Rajadhyaksha M, Menaker GM, Charles C, Jiang SB.
Use of ex vivo confocal scanning laser microscopy during Mohs surgery for nonmelanoma skin cancers. Dermatol Surg 2004; 30: 1470-1478.
Cockerell CJ. Histopathology of incipient intraepidermal squamous cell carcinoma
("actinic keratosis"). J Am Acad Dermatol 2000; 42: 11-17.
Coleman WP, Yarborough JM, Mandy SH. Dermabrasion for prophylaxis and
treatment of actinic keratoses. Dermatol Surg 1996; 22: 17-21.
DiGiovanna JJ. Retinoid chemoprevention in patients at high risk for skin cancer. Med
Dinehart SM: The treatment of actinic keratoses. J Am Acad Dermatol 2000; 42: 25-
Drake LA, Ceiley R, Cornelison RL, Dobes WL, Dorner W, Goltz W, Graham G, Lewis
CW, Salasche SJ, Chanco Turner ML, Lewery BJ. Guidelines of care for actinic keratoses. J Am Acad Dermatol 1995; 32: 95-98.
Epstein E. Does intermittent "pulse" topical 5-fluorouracil therapy allow destruction of
actinic keratoses without significant inflammation? J Am Acad Dermatol 1998: 77-80.
Emmett AJ, Broadbent GD. Shave excision of superficial solar skin lesions. Plast
Freeman M, Vinciullo C, Francis D, Spelman L, Nguyen R, Fergin P, Thai KE, Murrell
D, Weightman W, Anderson C, Reid C, Watson A, Foley P. A comparison of photodynamic therapy using topical methyl aminolevulinate (Metvix) with single cycle cryotherapy in patients with actinic keratosis: a prospective, randomized study. J Dermatolog Treat. 2003; 14: 99-106.
Frost C, Williams G, Green A. High incidence and regression rates of solar keratoses
in a queensland community. J Invest Dermatol 2000; 115: 273-277.
Fu W, Cockerell C: The actinic (solar) keratosis. Arch Dermatol 2003; 139: 66-70.
Fulton JE, Rahimi AD, Helton P, Dahlberg K, Kelly AG. Disappointing results following
resurfacing of facial skin with CO2 lasers for prophylaxis of keratoses and cancers. Dermatol Surg. 1999; 25: 729-732.
Gebauer K, Brown P, Varigos G. Topical diclofenac in hyaluronan gel for the
treatment of solar keratoses. Austr J Dermatol 2003; 44: 40-45.
Glogau R. The risk of progression to invasive disease. J Am Acad Dermatol 2000; 42:
Graham GF. Advances in cryosurgery during the past decade. Cutis 1993; 52: 365-
Guenthner ST, Hurwitz RM, Buckel LJ, Gray HR. Cutaneous squamous cell carcinomas
consistently show histologic evidence of in situ changes: A clinicopathologic correlation. J Am Acad Dermatol 1999; 41: 443-448.
Gupta AK, The management of actinic keratoses in the United States with topical
fluorouracil: a pharmacoeconomic evaluation. Cutis 2002; 70: 30-36.
Harwood CA, Proby M. Human papillomaviruses and non-melanoma skin cancer.
Heaphy MR Jr, Ackerman AB. The nature of solar keratosis: a critical review in
historical perspective. J Am Acad Dermatol. 2000; 43: 138-50.
Hemmi H, Kaisho T, Takeuchi O, Sato S, Sanjo H, Hoshino K, Horiuchi T, Tomizawa
H, Takeda K, Akira S. Small anti-viral compounds activate immune cells via the TLR7 MyD88-dependent signaling pathway. Nat Immunol 2002; 3: 196-200.
Humphreys TR, Werth V, Dzubow L, Kligman A. Treatment of photodamaged skin
with trichloroacetic acid and topical tretinoin. J Am Acad Dermatol 1996; 34: 638-44.
Iyer S, Friedli A, Bowes L, Kricorian G, Fitzpatrick RE. Full face laser resurfacing:
therapy and prophylaxis for actinic keratoses and non-melanoma skin cancer. Lasers Surg Med. 2004; 34: 114-119.
Jackson S, Storey A. E6 proteins from diverse cutaneous HPV types inhibit apoptosis
in response to UV damage. Oncogene 2000; 19: 592-598.
Jackson S, Harwood C, Thomas M, Banks L, Storey A. Role of Bak in UV-induced
apoptosis in skin cancer and abrogation by HPV E6 proteins. Genes & Dev 2000; 14: 3065-3073.
Johnson MP, Hageboutros A, Wang K, High L, Smith JB, Diasio RB: Life threatening
toxicity in a dihydropyrimidin-dehydrogenase-deficiency patient after treatment with topical 5-fluorouracil. Clinical Cancer Research 1999; 5: 2006-2011.
Johnson R, Stockfleth E. Imiquimod 5% cream for the treatment of cutaneous lesions
in immunocompomised patients. Acta Derm Venerol 2003; 214: S23-27.
Jorizzo J, Stewart D, Bucko A, Davis A, Davis SA, Espy P, Hino P, Rodriguez D, Savin
R, Stough D, Furst K, Connolly M, Levy S. Randomized trial evaluating a new 0.5% fluorouracil formulation demonstrates efficacy after 1-, 2-, or 4-week treatment in patients with actinic keratosis. Cutis 2002; 10: 335-339.
Jung YJ, Isaacs JS, Lee S, Trepel J, Neckers L. IL-1ß-mediated up-regulation of HIF-
1a via an NF?B/COX-2 pathway identifies HIF-1 as a critical link between inflammation and oncogenesis. FASEB J 2003; 17: 2115-2117.
Lawrence N, Cox SE, Cockerell CJ, Freeman RG, Cruz PD Jr: A comparison of the
efficacy and safety of Jessner's solution and 35% trichloroacetic vs 5% fluorouracil in the treatment of widespread facial actinic keratoses. Arch Dermatol 1995; 131: 176-181.
Lawrence N. New and emerging treatments for photoaging. Dermatol Clin 2000; 18:
Levy S, Furst K, Chern W. A comparison of the skin permeation of three topical 0.5%
fluorouracil formulations with that of a 5% formulation. Clin Therapeutics 2001; 23: 901-907.
Lober BA, Lober CW. Actinic keratosis is squamous cell carcinoma. South Med J
Loven K, Stein L, Furst K, Levy S: Evaluation of the efficacy and tolerability of 0.5%
fluorouracil cream and 5% fluorouracil cream applied to each side of the face in patients with actinic keratosis. Clin Ther 2002; 24: 990-1000.
Lubritz RR, Smolewski SA. Cryosurgery cure rate of actinic keratoses. J Am Acad
McNamara IR, Muir J, Galbraith AJ. Acitretin for prophylaxis of cutaneous
malignancies after cardiac transplantation. J Heart Lung Transplant 2002; 21: 1201-5.
Memon AA, Tomenson JA, Bothwell J, Friedmann PS. Prevalence of solar damage and
actinic keratosis in a Merseyside population. Br J Dermatol 2000; 142: 1154-1159.
Miller RL, Gerster JF, Owens ML, Slade HB, Tomai MA. Imiquimod applied topically: a
novel immune response modifier and new class of drug. Int J Immunopharmacol 1999; 21: 1-14.
Mittelbronn MA, Mullins DL, Ramos-Caro FA, Klowers FP. Frequency of pre-existing
actinic keratosis in cutaneous squamous cell carcinoma. Int J Dermatol 1998; 37: 677-681.
Moore AR, Willoughby DA: Hyaluronan as a drug delivery system for diclofenac: a
hypothesis for mode of action. Int J Tissue React 1995; 17: 153-156.
Moriarty M, Dunn J, Darragh A, Lambe R, Brick I. Etretinate in treatment of actinic
keratosis. A double-blind crossover study. Lancet 1982; 13: 364-365.
Morton CA, Brown SB, Collins S. Ibbotson S, Jenkinson H, Kurwa H, Langmack K,
McKenna K, Moseley H, Pearse AD, Stringer M, Taylor DK, Wong G, Rhodes LE. Guidelines for topical photodynamic therapy: report of a workshop of the British Photodermatology Group. Brit J Dermatology 2002; 146: 552-567.
Orth G, Jablonska S, Favre M, Jarzabek-Chorzelska M, Rzesa G. Characterization of
two types of human papillomaviruses in lesions of epidermodysplasia verruciformis. Proc Nat Acad Sci USA 1978; 75: 1537-1541.
Otley CC, Roenigk RK. Medium-depth chemical peeling. Semin Cutan Med Surg 1996;
Pariser DM, Lowe NJ, Stewart DM, Jarrat MT, Lucky AW, Pariser RJ, Yamauchi PS.
Photodynamic therapy with topical methyl aminolevulinate for actinic keratosis: results of a prospective randomized multicenter trial. J Am Acad Dermatol 2003; 48: 227-232.
Rivers JK, Arlette J, Shear N, Guenther L, Carey W, Poulin Y. Topical treatment of
actinic keratoses with 3.0% diclofenac in 2,5% hyaluronan gel. Brit J Dermatol 2002; 146: 94-100.
Robins P, Gupta AK. The use of topical fluorouracil to treat actinic keratosis. Cutis
Sachsenberg-Studer EM. Tolerance of topical retinaldehyde in humans. Dermatology
Salasche SJ: Epidemiology of actinic keratoses and squamous cell carcinoma. J Am
Salasche SJ, Levine N, Morrison L. Cycle therapy of actinic keratoses of the face and
scalp with 5% topical imiquimod cream: An open-label trial. J Am Acad Dermatol 2002; 47: 571-577.
Sass JO, Didierjean L, Carraux P, Plum C, Nau H, Saurat JH: Metabolism of topical
retinaldehyde and retinol by mouse skin in vivo: predominant formation of retinyl esters and identification of 14-hydroxy-4,14-retro-retinol. Exp Dermatol 1996; 5: 267-271.
Schmook T, Stockfleth E. Current treatment patterns in non-melanoma skin cancer
across Europe. J Dermatolog Treat 2003; 14: S3-10.
Sorg O, Tran C, Saurat JH. Cutaneous vitamins A and E in the context of ultraviolet-
or chemically-induced oxidative stress. Skin Pharmacol Appl Skin Physiol 2001; 14: 363-372.
Stasko T, Brown MD, Carucci JA, Euvrard S, Johnson TM, Sengelmann RD, Stockfleth
E, Tope WD; For the International Transplant-Skin Cancer Collaborative and the European Skin Care in Organ Transplant Patients Network. Guidelines for the management of squamous cell carcinoma in organ transplant recipients. Dermatol Surg 2004; 30: 642-650.
Stockfleth E, Ulrich C, Meyer T, Christophers E. Epithelial malignancies in organ
transplant patients: clinical presentation and new methods of treatment. Recent Results Cancer Res. 2002a; 160: 251-8.
Stockfleth E, Meyer T, Benninghoff B, Salasche S, Papadopoulos L, Ulrich C,
Christophers E. A randomized, double-blind, vehicle-controlled study to assess 5% imiquimod cream for the treatment of multiple actinic keratoses. Arch Dermatol 2002b; 138: 1498-1502.
Stockfleth E, Nindl I, Sterry W, Ulrich C, Schmook T, Meyer T. Human
papillomaviruses in transplant-associated skin cancers. Dermatol Surg 2004a; 30: 604-609.
Stockfleth E, Christophers E, Benninghoff B, Sterry W. Low incidence of new actinic
keratoses after topical 5% imiquimod cream treatment: a long-term follow-up study. Arch Dermatol 2004b; 140: 1542.
Stone PA. The use of modified phenol for chemical face peeling. Clin Plast Surg 1998;
Szeimies RM, Radakovic S, Calzavara-Pinton PG et al: A prospective, randomized
study comparing photodynamic therapy with Metvix ® to cryotherapy in actinic keratoses. J Eur Acad Dermatol Venereol 2000; 14: 235.
Szeimies RM, Karrer S, Radakovic-Fijan S, Tanew A, Calzavara-Pinton PG, Zane C,
Sidoroff A, Hempel M, Ulrich J, Proebstle T, Meffert H, Mulder M, Salomon D, Dittmar HC, Bauer JW, Kernland K, Braathen L. Photodynamic therapy using topical methyl 5-aminolevulinate compared with cryotherapy for actinic keratosis: a prospective, randomized study. J Am Acad Dermatol 2002; 47: 258-262.
Thompson SC, Jolley D, Marks R. Reduction of solar keratoses by regular sunscreen
Ulrich C, Christophers E, Sterry W, Meyer T, Stockfleth E. Skin diseases in organ
transplant patients. Hautarzt 2002; 53: 524-533.
Ulrich C, Schmook T, Sachse MM, Sterry W, Stockfleth E. Comparative epidemiology
and pathogenic factors for non-melanoma skin cancer in organ transplant patients. Dermatol Surg 2004; 30: 622-627.
Witheiler DD, Lawrence N, Cox SE, Cruz C, Cockerell CJ, Freeman RG. Long-term
efficacy and safety of Jessner's solution and 35% trichloroacetic acid vs 5% fluorouracil in the treatment of widespread facial actinic keratoses. Dermatol Surg 1997; 23: 191-196.
Wolf JE Jr. Taylor JR, Tschen E, Kang S. Topical 3,0% diclofenac in 2,5% hyaluronan
gel in the treatment of actinic keratoses. Int J Dermatol 2001; 40: 709-713.
Wollina U, Konrad H, Karamfilov T. Treatment of common warts and actinic keratoses
by Er:YAG laser. J Cutan Laser Ther 2001; 3: 63-6.
Yu TC, Rahman Z, Ross BS. Actinic keratoses--surgical and physical therapeutic
Zouboulis ChC. Principles of cutaneous cryosurgery: An update. Dermatology 1999;
Level Therapy/Prevention, Prognosis
homogeneity*) of RCTs homogeneity*) homogeneity*) of homogeneity*) of
cohort studies; studies; CDR† with studies
CDR† validated 1b studies from in different
inception cohort study with good††† study with good follow- clinically sensible
evidence; and including multi-way sensitivity analyses
value or worse-value analyses ††††
homogeneity*) homogeneity*) of homogeneity*) of 2b
Level >2 diagnostic and better studies
cohort studies or untreated control groups in RCTs
(including low quality cohort study or cohort study with study, or poor follow-
estimates of data, but including sensitivity analyses incorporating clinically sensible variations.
Case-series (and poor Case-series (and Case-control study, Case-series or
appraisal, or based on critical appraisal, critical appraisal, or appraisal, or based on critical appraisal, physiology, bench
physiology, bench research or "first
We are grateful for the support from our sponsors. It the NJPHA that our sponsors receive recognition Please include, in print, all sponsors with the class specifications in your prize list. New Jersey Chapter Professional Horseman’s Association 2013-2014 High Score Rules & Specifications 1. The NJPHA High Score Awards year will run from: December 1, 2013
Het natuurlijk leefgebied Zuid-Amerika en dan met name het gebied waar de rivier de Amazone met zijn vele zijrivieren, die zich via Peru, Oost-Colombia, Venezuela en Brazilië een weg baant naar de Atlantische Oceaan, is het leefgebied van de Symphysodon of beter gezegd van de Discus. Het leefgebied van de Discus is onmetelijk groot. De Amazonerivier ontspringt in het Andesgebergte, is