thecoma

[thē-kōmə]
n.
  1. 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.theca-cell tumor
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.