title: Pigmented tumors of the skin.
abstract: Based on a personal series of red, brown, black, and blue tumors of the skin, the various living gross pathological features are compared. In general good signs are tumors with round or oval shapes, no ulceration, of all one color and containing hair. Bad signs are notched or linear borders, ulceration, or variation in color.
mesh_terms: D006801:Humans; D008545:Melanoma / Q000473:pathology; D009508:Nevus, Pigmented / Q000473:pathology; D010858:Pigmentation; D011379:Prognosis; D012878:Skin Neoplasms / Q000473:pathology*