Background: Porokeratosis variants are relatively rare and can be clinically misdiagnosed with several common papulokeratotic mimickers. Line-field confocal optical coherence tomography (LC-OCT) is a new technology able to explore the skin in vivo up to a depth of 500 µm.
Objectives: To investigate the role of LC-OCT in the diagnosis of many porokeratosis variants in a preliminary study.
Method: In total, 130 LC-OCT images were obtained from 98 patients, 45 affected by a porokeratosis variant (69 images) and 53 with a mimicker condition (61 images).
Results: We found almost perfect interobserver agreement for LC-OCT image interpretation and perfect correspondence with the findings from histological slides. In addition, a series of morphological in vivo and three-dimensional features related to the cornoid lamella were detected by LC-OCT that were not visible from the histology.
Conclusions: This device can be proposed to assist with rapid bedside noninvasive differentiation of porokeratosis variants from their mimickers, possibly sparing incisional biopsy in patients where the diagnosis is uncertain.
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http://dx.doi.org/10.1093/ced/llae285 | DOI Listing |
Ann Dermatol Venereol
December 2024
Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China. Electronic address:
Porokeratosis ptychotropica (PP) is a rare variant of porokeratosis that frequently mimics the clinical manifestations of various squamoproliferative disorders. It lacks a specific definition and adequate understanding. Diagnosis is difficult clinically and remains controversial in some published cases.
View Article and Find Full Text PDFMedicina (Kaunas)
November 2024
Department of Dermatology, Institute of Medical Sciences, Medical College of Rzeszow University, 35010 Rzeszow, Poland.
Porokeratoses represent a rare group of skin diseases characterized by abnormal keratinization. The condition may have a genetic background and can be triggered by environmental factors, including UV exposure and infections. Several clinical variants of porokeratosis can be distinguished, including Mibelli's porokeratosis, disseminated superficial actinic porokeratosis, superficial disseminated porokeratosis, and porokeratosis palmaris plantaris et disseminata.
View Article and Find Full Text PDFActa Derm Venereol
October 2024
Department of Dermatology, National University Hospital, Singapore; Department of Medicine, National University of Singapore, Singapore.
Porokeratosis ptychotropica (PP) is a rare and unusual variant of porokeratosis. There is a dearth of information on the natural history, epidemiology, and optimal treatment options. This study aimed to characterize the worldwide distribution, epidemiology, clinical features, and treatments attempted for all reported cases of porokeratosis ptychotropica.
View Article and Find Full Text PDFIndian J Dermatol
August 2024
Department of Dermatology, Mysore Medical College and Research Institute, Mysore, Karnataka, India.
Clin Cosmet Investig Dermatol
August 2024
Department of Dermatology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China.
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