Verruca senilis und Keratoma senile

Cryopeeling (Extensive Cryosurgery) for Treatment of Actinic Keratoses: An Update and Comparison

“…2,3 Other estimates of up to 20 in 100 may reflect the population studied or a difference in how the investigator defined an actinic keratosis. 4,5 Marks 6 most conservatively estimated that in a given year the chance of an actinic keratosis progressing to a squamous cell carcinoma was 0.075%, low indeed. This was based on the conclusion that 40% of squamous cell carcinomas arise apart from actinic keratoses.…”

Cutaneous Manifestations in Renal Transplant Recipients

“…The present study emphasizes that these dermopathies, usually asso ciated with the older age-groups, are present at a younger age in transplant patients, in our series as well as in that of Koranda et al [2] which reported dyskeratoses in the age-groups from 19 to 42 years. According to the data from Montgomery and Dorffel [14], about 20% of actinic keratoses observed in the general population may evolve into squamous cell carcinoma. In transplant recipients a more rapid evolution of these dyskeratoses into spinaliomas has been reported [15,16] while others [17] report that transplant patients are 34.4 times more prone to develop squamous cell carcinoma than the control population.…”

Clinical Applicability of in vivo Reflectance Confocal Microscopy for the Diagnosis of Actinic Keratoses

“…Therefore, a new definition for AKs has been suggested that classifies an AK as a carcinoma in situ of the skin 1,2 . AKs are limited to the epidermis and have no potential to metastasize, yet progression rates from AK to SCC have been estimated between 10 and 20% in one or more of the lesions over a 10‐year period 3–5 . Furthermore, almost 100% of “healthy” skin sites in the immediate surroundings of clinically visible lesions showed characteristic changes of AKs upon histopathologic analysis 6 .…”