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microaneurysm

[mī′krō-ăn′yə-rĭz′əm]

n.

A focal dilation of the venous end of retinal capillaries occurring in diabetes mellitus, retinal vein obstruction, and absolute glaucoma.

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