Mikhail G R
J Dermatol Surg Oncol. 1986 May;12(5):519-21. doi: 10.1111/j.1524-4725.1986.tb01943.x.
Hutchinson's sign--pigmentation of the periungual tissues--is a valuable clue to the diagnosis of subungual melanoma. When present, this sign indicates malignant melanoma, however minimal the pigmentation or the histology may be. An illustrative case is presented.