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Occupation‐related pigmented macules on the sole with parallel‐ridge pattern on dermatoscopy
Author(s) -
Tanioka M.,
Matsumura Y.,
Utani A.,
Tanaka M.,
Miyachi Y.
Publication year - 2009
Publication title -
clinical and experimental dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 78
eISSN - 1365-2230
pISSN - 0307-6938
DOI - 10.1111/j.1365-2230.2008.03134.x
Subject(s) - dermatoscopy , dermatology , ridge , medicine , biopsy , lesion , differential diagnosis , pathology , biology , melanoma , paleontology , cancer research
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.