Ultraviolet-Induced Fluorescence Dermatoscopy (UVFD) features in Porokeratosis: Findings from a Multicenter...

Area of Science:

• Dermatology
• Medical Imaging
• Histopathology

Background:

• Porokeratosis is a group of keratinization disorders with a characteristic cornoid lamella.
• Clinical diagnosis is challenging due to overlapping features with other skin conditions.
• Polarized light dermatoscopy (PLD) aids diagnosis, but some features remain difficult to identify.

Purpose of the Study:

• To evaluate the diagnostic utility of Ultraviolet-induced fluorescence dermatoscopy (UVFD) versus PLD for porokeratosis.
• To compare the visualization of specific dermatoscopic features between UVFD and PLD.

Main Methods:

• Retrospective study involving dermatologists from multiple institutions.
• Collection of both PLD and UVFD images for biopsy-proven porokeratosis lesions.
• Independent evaluation of dermatoscopic features including peripheral keratin rim, scaling, and vascular structures.

Main Results:

• UVFD significantly enhanced visualization of the peripheral keratin rim (95.6% vs. 66.2% with PLD; P<0.001).
• UVFD improved identification rates for central scaling, follicular plugs, and interrupted rims.
• PLD demonstrated superiority in detecting vascular structures (P<0.001).

Conclusions:

• UVFD offers improved visualization of key dermatoscopic features in porokeratosis.
• UVFD is particularly effective for identifying keratin-related structures like the peripheral rim.
• UVFD represents a valuable advancement in the dermatoscopic diagnosis of porokeratosis.