Riehl's Melanosis: A Multimodality, In Vivo, Real-Time Skin Imaging Study with Cellular Resolution Optical Coherence...

Area of Science:

• Dermatology
• Medical Imaging
• Pathology

Background:

• Riehl's melanosis is a rare, psychologically impactful hyperpigmentation disorder affecting the face and neck.
• Limited diagnostic tools and variable morphology hinder Riehl's melanosis research.
• Advances in skin imaging offer potential for noninvasive, real-time diagnosis of pigmentary diseases.

Purpose of the Study:

• To investigate the clinical morphology of Riehl's melanosis.
• To analyze in vivo advanced skin imaging findings in Riehl's melanosis patients.
• To correlate imaging findings with histopathology.

Main Methods:

• Retrospective analysis of clinical, dermoscopic, and histopathological features in 30 Riehl's melanosis patients.
• Utilized cellular resolution optical coherence tomography (OCT) and a photographic skin diagnosis system.
• Compared OCT findings with histopathological results and clinical assessment.

Main Results:

• Evaluated 30 patients (23 female, 7 male; average age 47.7 years).
• Cellular resolution OCT showed increased melanocyte capping, disrupted basement membrane, telangiectatic vessels, and dermal melanophages.
• Advanced skin diagnosis system detected subclinical erythema, indicating an inflammatory component, correlating with histopathology.

Conclusions:

• Cellular resolution OCT and photographic skin diagnosis system effectively visualize Riehl's melanosis features.
• Multimodality skin imaging provides a real-time, in vivo, noninvasive method for evaluating pigmentary disorders.
• This study enhances understanding and diagnosis of Riehl's melanosis.