Keratoacanthoma is a relatively common benign squamous neoplasm that may show spontaneous clearing. Although the cause of the tumour is unknown, there are some reports describing keratoacanthoma following various types of trauma or secondary to other skin lesions. Thermal burns are reported to be important preceding traumas in the development of keratoacanthomas. whereas there is only one report of cold trauma of cryotherapy. We report a rare case of keratoacanthoma arising in the site of cryotherapy applied for solar keratosis.
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From basic to clinical and therapeutic insights: news on actinic keratosis and skin squamous cell carcinoma.
Curr Opin Oncol
December 2024
Dermatology department, Hôpital Erasme-HUB.
Purpose Of Review: Squamous cell carcinoma (SCC) is the second most common skin cancer, with an increasing incidence. This review highlights this past year's advances regarding the understanding of its pathogenesis, newly introduced diagnostic methods and updates in prevention and treatment.
Recent Findings: While the pathogenesis of SCC progression remains unclear, new sequencing techniques are helping to better characterize these tumours at the molecular level.
Computational network analysis of two popular skin cancers provides insights into the molecular mechanisms and reveals common therapeutic targets.
Heliyon
January 2025
Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh.
Basal Cell Carcinoma (BCC) and Actinic Keratosis (AK) are prevalent skin conditions with significant health complications. The molecular mechanisms underlying these conditions and their potential shared pathways remain ambiguous despite their prevalence. Therefore, this study aims to elucidate the common molecular pathways and potential therapeutic targets for BCC and AK through comprehensive computational network analysis.
View Article and Find Full Text PDFEpidemiology and Management of Actinic Keratosis in France: A General Population Survey (REAKT).
Acta Derm Venereol
January 2025
Department of Dermatology, Saint-André Hospital, Bordeaux University Hospital, Bordeaux, France.
The objective of this retrospective observational study was to estimate the prevalence of actinic keratosis (AK) in individuals aged ≥ 40 years in France, to describe the characteristics of affected patients, and to describe treatments. A representative panel of 20,000 households with ≥ 1 member aged ≥ 40 years were invited to participate. Participants who reported AK lesions diagnosed by a physician were eligible.
View Article and Find Full Text PDFSelf-Applied Daylight Photodynamic Therapy: A Paradigm Shift?
Int J Mol Sci
January 2025
Dermatology Department, Hospital Universitario Ramon y Cajal, Carretera M-607 km 9.1, 28034 Madrid, Spain.
Photodynamic therapy (PDT) involves the topical application of a photosensitizer and its activation by visible light, leading to the generation of protoporphyrin IX (PpIX) and reactive oxygen species. Daylight photodynamic therapy (dPDT), a variant utilizing natural sunlight as the energy source, enhances procedural flexibility by eliminating the need for specialized equipment. dPDT has been effectively used in dermatology to treat various cutaneous disorders, including neoplastic and infectious diseases.
View Article and Find Full Text PDFAssociation Between Local Skin Reactions and Efficacy with 5-Fluorouracil 4% Cream in Actinic Keratosis: A Post-Hoc Analysis of Two Randomised Clinical Trials.
Dermatol Ther (Heidelb)
January 2025
Medical Direction Pharmaceutical Care and Medical Dermatology, Pierre Fabre Dermatologie, Les Cauquillous, 81500, Lavaur, France.
Introduction: Topical 5-fluorouracil (5-FU), 5% or 4% cream, is recommended among first-line treatments for actinic keratosis (AK). Local skin reactions (LSRs) are an expected and transient response to treatment with 5-FU but can lead to treatment discontinuation when severe. This analysis aimed to investigate whether the severity of LSRs during the treatment was associated with lesion clearance assessed 4 weeks after completing treatment.
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