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| Fig. 45.4 Acral lentiginous melanoma in situ arising from the nail bed of a black woman. Note the presence of pigment in the periungual tissue (positive Hutchinson’s sign). (Courtesy of James E. Fitzpatrick, MD.) |
The development of pigmentation at the base of linear melanonychia involving the proximal nail fold and periungual skin (Fig. 45-4). This sign is felt to be a very specific indication that the linear melanonychia is due to melanoma.
Baran R, Kechijian P: Hutchinson’s sign: a reappraisal,
J Am Acad Dermatol 44:87–90, 2001.
