Hutchinson's sign.
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.
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Mikhail
D005260:Female; D006801:Humans; D008545:Melanoma / Q000175:diagnosis*; D008875:Middle Aged; D009262:Nails; D010859:Pigmentation Disorders / Q000175:diagnosis*; D013577:Syndrome