Malignant transformation to melanoma is common in: March 2009

Ans. B: Junctional nevus Intradermal nevus: Benign; Junctional nevus: Premalignant: source for most malignant melanomas; looks like intradermal nevus but larger, often ulcerated, irregular border and heterogeneous coloration. Suspect melanoma if junctional nevus is getting darker or larger or bleeding or itching. Spitz nevus/spindle and epithetliod cellnevus is a red-pink nodule; often confused with hemangioma clinically Blue nevus is black-blue nodule; often confused with melanoma clinically