Wyburn-Mason syndrome

[wībərn-māsən]
n.
  1. Arteriovenous malformation on the cerebral cortex, retinal arteriovenous angioma, and facial nevus, usually occurring in mentally retarded individuals.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.