congophilic angiopathy

[kŏng′gō-fĭlĭk]
n.
  1. A condition of blood vessels characterized by deposits in the vessel walls of a substance, usually amyloid, that is easily stained by Congo red.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.