leukosarcomatosis

[lōō′kō-sär-kō′mə-tōsĭs]
n.
  1. A condition characterized by numerous widespread sarcomas composed of leukemic cells and by the presence of leukemic cells in the blood.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.