endometrial stromal sarcoma

n.
  1. A rare sarcoma in which the lesions form multiple foci in the myometrium and in vascular spaces in other sites and the tissue and cells resemble endometrial stroma cells.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.