malignant lentigo


n.

A precancerous brown or black lesion of the skin, often present in older persons, that appears on areas exposed to the sun, is irregular in shape, and is slow growing.Hutchinson's freckle

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.