Medical Dictionary

thecoma the·co·ma (thē-kō'mə)
A tumor derived from ovarian mesenchyme and consisting chiefly of spindle-shaped cells that frequently contain small droplets of fat; it may form considerable quantities of estrogens, causing development of secondary sexual features in prepubertal girls or endometrial hyperplasia in older individuals. Also called theca-cell tumor.

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