microaneurysm


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microaneurysm

[¦mī·krō′an·yə‚riz·əm]
(medicine)
Dilation of the wall of a capillary, characteristic of certain disease entities.
References in periodicals archive ?
Doctors give diagnosis results based on 3 major lesions: microaneurysm, exudates, and inhomogeneity.
This system was developed to allow the accurate localization of treatment to delicate lesions like microaneurysms and increase treatment efficacy.
The neck area was shaved, and then both common carotid arteries were exposed carefully by blunt dissection and clamped for 10 min with microaneurysm clips.
The pathophysiological process occurring in vessels of the retina, peripheral nerve and kidney are very similar, results in increased basement membrane thickening, loss of pericytes and smooth muscle cells of retinal vessels, microaneurysm formation and mesangial nodule formation in kidney and endothelial hyperplasia in vasa nervorum.
After they were isolated, loosely looped around by silk threads, they were occluded for exactly 4 min with microaneurysm clips.
It is characterized by increased vascular permeability, thickening of the basement membrane, capillary occlusion, the formation of microaneurysm, and the appearance of neovascularization (Forrester and Knott 1997).
Mild NPDR: Presence of at least one microaneurysm, definition not met for B, C, D, E or F.
Duke, Wilkinson and Sigelman (1964), and Jaspol, Goldberg and Bruce (1975) 18 noted a high incidence of retinal microaneurysms in chronic leukemia and no microaneurysm in acute leukemia.
The smallest clinically visible microaneurysm is generally considered to be 30[micro]m (3), although the size may vary from 12[micro]m to over 100[micro]m.
Mild Non-proliferative diabetic retinopathy: Presence of at least one microaneurysm.