Two kinds of Hutchinson's sign, benign and malignant.

Kawabata, Y; Ohara, K; Hino, H; Tamaki, K · J Am Acad Dermatol · 2001

case_series · Level IV

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Abstract

We examined 6 subungual melanomas in situ and 18 melanocytic nevi and compared pigmentation of the nail plates and hyponychium with the use of a dermatoscope. Hutchinson's sign on the hyponychium was not always evidence of subungual melanoma because it can be seen in both diseases. However, there was a wide difference in their dermatoscopic features. We believe that observation of pigmentation on the hyponychium with the use of a dermatoscope contributes to the precise diagnosis of subungual melanoma.

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