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Updated: May 26, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
Squamous Cell Carcinoma Developing within Lesions of Disseminated Superficial Actinic Porokeratosis
Hyung Rae Lee1, Tae Young Han, Sook-Ja Son
1Department of Dermatology, Eulji Hospital, College of Medicine, Eulji University, Seoul, Korea.
Abstract:
Disseminated superficial actinic porokeratosis (DSAP) consists of multiple annular, hyperkeratotic lesions that have a bilateral distribution on sun-exposed areas, particularly the extremities. DSAPs have a wider distribution than porokeratosis of Mibelli and usually develop during the 3rd or 4th decade of life. Squamous cell carcinoma that arises in the classical type of porokeratosis of Mibelli is well-documented, but there are only a few reports of squamous cell carcinoma in DSAP. Here, we describe a 62-year-old man with DSAP who developed squamous cell carcinoma on his right forearm.
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