L'image du mois. La polykystose rénale autosomique dominante

peer reviewe

How I explore...skin by photodiagnosis using skin fluorescence and its functional imaging

peer reviewedUnder specific light illumination, skin produces peculiar fluorescent aspects. Such property can be used to provide diagnostic arguments or to disclose some peculiar functions of the skin. Some superficial infections (erythrasma, tinea versicolor, dermatophytic tinea,..) reveal fluorescence that may be intense. The pilosebaceous follicles enriched in Propionibacterium spp show fluorescence. Such property is lost during some anti-acne treatments. A quenching effect is observed after application of sunscreens. The (pre)neoplastic areas prepared for dynamic phototherapy become fluorescent. Pyranine labeling of the stratum corneum exhibits fluorescence allowing the assessment of the renewal activity of the epidermis

Scrutinizing skinfield melanin patterns in young Caucasian women.

Introduction: When using adequate wavelength illumination and high resolution recordings, Caucasian skin color appears uneven. The patterns of faint mosaic melanoderma (FMM) are diverse and possibly related to the risk of skin cancer development. Areas covered: The current peer-reviewed publications about objective methods quantifying FMM are revisited. The images from the Visioscan(R) and Visioface(R) Quick devices are computerized in order to record the ultraviolet light-enhanced visualization (ULEV) and the color-enhanced visualization (CEV) of the skin. Previously published data regarding the FMM are gathered in 20 odd Caucasian women. Seven FMM patterns are distinguished. They appear expressed differently according to body regions, but the mean gray level appears more uniform. Expert opinion: The combination of larger subclinical melanotic macules and ivory spots during early adulthood is apparently associated with an increased risk for non-melanoma skin cancers

Visioscan-driven ULEV method.

peer reviewe