chorioangiosis

[kôr′ē-ō-ăn′jē-ōsĭs]

n.

An abnormal increase in the number of vascular channels that are present in the villi of the placenta; severe chorioangiosis is associated with a high incidence of neonatal death and major congenital malformations.chorioangiomatosis

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