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Actinic keratosis

Maria Concetta Fargnoli, Antonella Piccioni, Luca Neri, Sara Tambone, Cristina Pellegrini, Ketty Peris
No abstract text is available yet for this article.
October 17, 2016: European Journal of Dermatology: EJD
Magdalene A Dohil
BACKGROUND: Actinic keratosis (AK) is a neoplastic keratosis and a precursor of squamous cell carcinoma (SCC). OBJECTIVE: We are presenting data on a novel formulation of 4% 5-Fluorouracil (5-FU) in an aqueous vehicle cream containing peanut oil (Tolak) with once daily application versus treatment with 5% 5-FU twice daily for 4 weeks. METHODS: 1) A dose ranging study of 4% 5-FU cream once or twice daily for 2 or 4 weeks and its vehicle, compared to 5% 5-FU cream twice daily for 4 weeks in 121 subjects...
October 1, 2016: Journal of Drugs in Dermatology: JDD
Martina Ulrich, Susanne Lange-Asschenfeldt, Kresten Skak, Torsten Skov, Marie Louise Østerdal, Hans-Joachim Röwert-Huber, John Robert Zibert, Eggert Stockfleth
Ingenol mebutate represents a topical treatment for fields with actinic keratosis (AK). The biological effects of ingenol mebutate in AK, subclinical (SC)-AK, and reference-skin were assessed and graded by in vivo reflectance confocal microscopy (RCM) and histology. Patients with AK and SC-AK lesions in one 25 cm2 field on hands or forearms, and with an area of reference skin on the inner upper arm, were included. The two fields were each treated with ingenol mebutate 0.05% gel (n=16), or vehicle (n=8), on 2 consecutive days; clinical and RCM assessments were performed on days 1, 2, 3, 8, and 57, and biopsies on day 3...
October 1, 2016: Journal of Drugs in Dermatology: JDD
Meng-Jie Zhao, Bilal Abdul-Fattah, Xiao-Ying Qu, Cui-Yan Wang, Xia Wang, Yi Ran, Ting Lai, Si-Yuan Chen, Chang-Zheng Huang
INTRODUCTION: Mycosis fungoides (MF) is the most common form of primary cutaneous T cell lymphoma. Narrowband ultraviolet B light (NBUVB) is used increasingly in treating MF because of its good toleration and well-established management. CONCERNS: To discuss the risk factors and underlying pathogenic factors in the patients with secondary skin diseases after NBUVB therapy. METHODS: We report in details the first case of a patient with MF accompanied with actinic keratosis (AK), AK with squamous cell carcinoma (SCC) transformation and porokeratosis after NBUVB therapy...
October 2016: Medicine (Baltimore)
S A Braun, P A Gerber
actinic field cancerization (AFC) is a frequent neoplastic skin disease with a high prevalence in the elderly population. AFC is defined as a condition with at least six actinic keratosis (AKs) in one body region or field of chronically sun-damaged skin.(1) With regard to the management of AFC a superior efficacy has been demonstrated for field-directed treatments, such as 5-fluorouracil, imiquimod, ingenol mebutate or photodynamic therapy (PDT), as compared to lesion-directed measures, such as cryotherapy...
October 12, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
Zainab Jiyad, Peter O'Rourke, H Peter Soyer, Adèle C Green
Actinic keratoses (AKs) are common lesions that are usually diagnosed clinically. We sought to examine the accuracy of AK counts on digital photographs when compared with clinical examination counts. Skin sites of renal transplant recipients were examined clinically and on digital photographs by independent dermatologically-trained examiners. Specificity, sensitivity and Kendall's tau-b correlation coefficient were calculated based on exact photographic AK counts as well as counts with ± 1 AK tolerance...
October 4, 2016: Acta Dermato-venereologica
C V Nissen, I M Heerfordt, S R Wiegell, C S Mikkelsen, H C Wulf
BACKGROUND: Photodynamic therapy (PDT) with methyl aminolevulinate (MAL) is highly effective for treating actinic keratosis (AKs) on the face/scalp, but less effective on the extremities. Insufficient accumulation of protoporphyrin IX (PpIX) may cause these inferior efficacy rates. However, it is possible to increase PpIX accumulation by extending MAL application time and/or pretreating the skin with curettage. OBJECTIVES: To investigate whether increased PpIX accumulation improves the effect of MAL-PDT for AKs in a randomized intraindividual study...
October 1, 2016: British Journal of Dermatology
Martin Ulrich, Iris Zalaudek, J Welzel
Actinic keratosis, Bowen disease, and invasive squamous cell carcinoma represent different steps within the disease continuum of squamous neoplasia. Although these stages of squamous neoplasia share common findings, reflectance confocal microscopy may be applied for their differentiation and distinction from other benign or malignant lesions. Hyperkeratosis represents the most important limitation in the evaluation of squamous neoplasia as it may impair the analysis of deeper epidermal and dermal structures significantly...
October 2016: Dermatologic Clinics
A Bauer
The incidence of epithelial skin neoplasms, such as squamous cell carcinoma and basal cell carcinoma is significantly increasing worldwide. Leisure time solar UV exposure is causative in the overwhelming majority of cases in the general population; however, occupational exposure is responsible for a certain percentage of cases. Employees with a relevant exposure to polycyclic aromatic hydrocarbons in soot, raw paraffin, coal tar, anthracene, pitch or similar substances, to sunlight in outdoor occupations as well as to arsenic and ionizing radiation have a significantly increased risk to develop occupational skin cancer compared to the general population...
September 28, 2016: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
Peter W Hashim, John K Nia, Skylar Singer, Gary Goldenberg
OBJECTIVES: To evaluate the safety and efficacy of ingenol mebutate 0.05% gel after cryosurgery versus cryosurgery alone for the treatment of hypertrophic and nonhypertrophic actinic keratosis on the dorsal hands. DESIGN: Investigator-blinded split arm study. SETTING: Academic institution. PARTICIPANTS: Sixteen subjects with actinic keratoses on dorsal hands. RESULTS: There was a mean reduction in the number of hypertrophic actinic keratosis lesions adjusted for baseline in ingenol mebutate-treated versus control group of -4...
July 2016: Journal of Clinical and Aesthetic Dermatology
Ida M Heerfordt, Christoffer V Nissen, Thomas Poulsen, Peter A Philipsen, Hans Christian Wulf
The severity of dysplasia and expression of p53 in actinic keratosis (AK) is of importance for the transformation to squamous cell carcinoma. It is assumed that it is most important to treat thick AKs as they are believed to be more dysplastic than thin AKs. However, a relation between AK thickness and dysplasia or the expression of p53 has never been demonstrated. The aim of this study was to investigate this possible relation. Sixty-six AKs were included for clinical and histological examination. Prior to performing a punch biopsy, the clinical thickness of each AK was measured objectively using two scale bars with a thickness of 0...
September 27, 2016: Scientific Reports
Lazaros Belbasis, Irene Stefanaki, Alexander J Stratigos, Evangelos Evangelou
BACKGROUND: Skin cancers have a complex disease mechanism, involving both genetic and non-genetic risk factors. Numerous meta-analyses have been published claiming statistically significant associations between non-genetic risk factors and skin cancers without applying a thorough methodological assessment. OBJECTIVE: The present study maps the literature on the non-genetic risk factors of skin cancers, assesses the presence of statistical biases and identifies the associations with robust evidence...
September 13, 2016: Journal of Dermatological Science
Kaiyin Zhong, Joris A C Verkouteren, Leonie C Jacobs, Andre G Uitterlinden, A Hofman, Fan Liu, Tamar Nijsten, Manfred Kayser
Actinic keratosis (AK) is a skin disease frequently found in European elderly and represents the precursor of cutaneous squamous cell carcinoma (SCC). Our recent genome-wide association study (GWAS) highlighted DNA variants in two pigmentation genes, IRF4 and MC1R, to confer AK risk in Europeans. Here, we performed a genome-wide search for relaxed forms of compound heterozygosity (CH) in association with AK using our recently developed software CollapsABEL. In a discovery dataset of 3,193 Dutch Europeans, a total of 15 genetic loci showed genome-wide significant association with AK (P < 1...
September 16, 2016: Journal of Investigative Dermatology
Rolf-Markus Szeimies, Petar Atanasov, Robert Bissonnette
: Complete patient clearance is often required by regulatory agencies for the approval of treatments for actinic keratosis (AK). However, an increasing number of clinicians have challenged the use of this measure in clinical practice and its interpretation. It has been argued that complete patient clearance often underestimates the clinical benefit of a drug and is influenced by a number of key confounding factors, such as number and distribution of lesions, at baseline. Lesions response rate is one alternative which has been suggested as more relevant due to its applicability to clinical practice and closer reflection of the clinical value of the drug...
September 19, 2016: Dermatology and Therapy
Andrés Már Erlendsson, Daniel Thaysen-Petersen, Christiane Bay, Andreas Hald, Kresten Skak, John Robert Zibert, Uwe Paasch, Hans Christian Wulf, Merete Haedersdal
BACKGROUND AND AIM: Ingenol mebutate (IngMeb) is an effective treatment for actinic keratosis. In this study, we hypothesized that repeated treatments with IngMeb may prevent progression of UV-induced photodamage, and that concurrent application of a corticosteroid may reduce IngMeb-induced local skin responses (LSR). METHODS: Hairless mice (n = 60; 3 groups of 20 mice) were irradiated with solar simulated ultraviolet radiation (UVR) throughout the study. Five single treatments with IngMeb were given at 4-week intervals (Days 21, 49, 77, 105, and 133)...
2016: PloS One
Orit Markowitz, Michelle Schwartz, Sumeet Minhas, Daniel M Siegel
Non-invasive imaging devices are currently being utilized in research and clinical settings to help visualize, characterize, anddiagnose cancers of the skin. Speckle-variance optical coherence tomography (svOCT) is one such technology that offers considerable promise for non-invasive, real time detection of skin cancers given its added ability to show changes in microvasculature. We present four early lesions of the face namely sebaceous hyperplasia, basal cell skin cancer, pigmented actinic keratosis, and malignant melanoma in situ that each display different important identification markers on svOCT...
2016: Dermatology Online Journal
José D Vollet Filho, Cintia T Andrade, Hilde H Buzza, Kate Blanco, Fernanda Carbinatto, Vanderlei S Bagnato, Ron R Allison
Aktinic Keratosis is common and if left untreated may develop into life threatening squamous cell carcinoma. Therefore early intervention is the standard of care. While many treatments are available PDT continues to move to the for - front for this indication (Brito et al., 2016 [31]). Topical PS is commercially available that are able to reliably ablate these lesions. Innovative protocols including sunlight, large volume LED arrays and maneuvers to improve treatment parameters and cosmesis continue to make this a worldwide treatment of choice for AK...
September 7, 2016: Photodiagnosis and Photodynamic Therapy
T Hommel, R-M Szeimies
Actinic keratosis (AK) is a very common skin diagnosis in office-based dermatology. Due to the demographic changes with increasing numbers of elderly people, the proportion of patients with AK is expected rise. In order to avoid progression into squamous cell carcinoma, early treatment is recommended. Numerous treatment options are currently available for this purpose. In addition to targeted therapies for isolated AK many field-directed treatment modalities are available. However, the treatment option that is finally chosen depends on a variety of factors (e...
September 9, 2016: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
Steffen Emmert, Holger A Haenssle, John R Zibert, Margarete Schön, Andreas Hald, Maria H Hansen, Thomas Litman, Michael P Schön
UNLABELLED: The rapid and strong clinical efficacy of the first-in-class, ingenol mebutate, against actinic keratosis (AK) has resulted in its recent approval. We conducted the first comprehensive analysis of the cellular and molecular mode of action of topical ingenol mebutate 0.05% gel in both AK and uninvolved skin of 26 patients in a phase I, single-center, open-label, within-patient comparison. As early as 1 day after application, ingenol mebutate induced profound epidermal cell death, along with a strong infiltrate of CD4+ and CD8+ T-cells, neutrophils, and macrophages...
2016: PloS One
Thomas L Diepgen
Occupational skin diseases according to BK No. 5101 - "severe or recurrent skin diseases which have forced the person to discontinue all occupational activities that caused or could cause the development, worsening, or recurrence of the disease" - is the most commonly reported notifiable occupational diseases in Germany. Following the optimization of measures of primary, secondary, and tertiary prevention, today most individuals affected are able to continue their profession. With the revision of the German ordinance on occupational diseases (BKV) in January 2015, skin cancer caused by UV irradiation was added to the list of occupational diseases...
September 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
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