microaneurysm

microaneurysm
Focal dilation of retinal capillaries occurring in diabetes mellitus, retinal vein obstruction, and absolute glaucoma, or of arteriolocapillary junctions in many organs in thrombotic thrombocytopenic purpura.

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mi·cro·an·eu·rysm also mi·cro·an·eu·rism -'an-yə-.riz-əm n a saccular enlargement of the venous end of a retinal capillary associated esp. with diabetic retinopathy
mi·cro·an·eu·rys·mal -.an-yə-'riz-məl adj

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n.
a minute localized swelling of a capillary wall, which is found in the retina of patients with diabetic retinopathy. It is recognized as a small red dot when the interior of the eye is examined with an ophthalmoscope.

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mi·cro·an·eu·rysm (mi″kro-anґu-riz″əm) a microscopic aneurysm, a characteristic feature of diabetes mellitus.

Medical dictionary. 2011.

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