Occupation-related pigmented macules on the sole with parallel-ridge pattern on dermatoscopy

Authors: Tanioka, M.; Matsumura, Y.; Utani, A.; Tanaka, M.; Miyachi, Y.

Source: Clinical & Experimental Dermatology, Volume 34, Number 5, July 2009 , pp. e31-e33(3)

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Abstract:

Summary

A 27-year-old man presented with pigmented macules on the right sole, which showed a parallel-ridge pattern on dermatoscopy. His work for a chemical company involved handling para-phenylenediamine. Histological examination of a biopsy from a lesion did not find any proliferation of atypical melanocytes. Shaving the cornified layer of the lesions with a surgical knife resulted in the disappearance of macules. We speculate that para-phenylenediamine on the sole of the patient's work boot might have become blotted to the cornified layer of the cutis. This report adds a new occupation-related differential diagnosis for skin diseases showing a parallel-ridge pattern on dermatoscopy.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1365-2230.2008.03134.x

Affiliations: 1: Department of Dermatology, Tokyo Women's Medical University Medical Center East, Tokyo, Japan

Publication date: 2009-07-01