histoma

[ hĭ-stōmə ]

n. pl. his•to•mas

A benign tumor having cytologic and histologic elements closely similar to those of normal tissue from which the tumor cells derive.

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