microaneurysm


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microaneurysm

 [mi″kro-an´u-rizm]
a minute aneurysm occurring on a vessel of small size, or such as occurs in thrombotic purpura.

mi·cro·an·eu·rysm

(mī'krō-an'yū-rizm),
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.

microaneurysm

/mi·cro·an·eu·rysm/ (-an´ūr-izm) a microscopic aneurysm, a characteristic of thrombotic purpura.

microaneurysm

[mi′krō·an′yəriz′əm]
Etymology: Gk, mikros + aneurysma, a widening
a microscopic aneurysm characteristic of thrombotic purpura.

microaneurysm

A minute aneurysmal dilation of arteries, arterioles or capillaries, which is classically seen in the retina of patients with long-standing diabetes and often associated with oedema and haemorrhage. Microaneurysms occur elsewhere in diabetes, as well as in other conditions (e.g., thrombotic thrombocytopenic purpura).

microaneurysm

A teensy-weensy aneurysmal dilation of small arteries, arterioles, or capillaries 'classically' seen in the retina of Pts with long-standing DM, often associated with edema and hemorrhage; MAs occur elsewhere in DM, and in other conditions–eg, thrombotic thrombocytopenic purpura. See Cherry-red spot.

mi·cro·an·eu·rysm

(mī-krō-an'yūr-izm)
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.

microaneurysm

focal dilatation of retinal capillaries; characteristic of diabetic retinopathy and glaucoma

microaneurysm

Tiny swelling in the wall of a blood vessel. It appears in the retinal capillaries as a small, round, red spot. It is commonly found in diabetic retinopathy, retinal vein occlusion or absolute glaucoma.

microaneurysm

a minute aneurysm occurring on a vessel of small size, such as one in the retina of the eye or as occurs in thrombotic purpura.
References in periodicals archive ?
The same workers then examined the ability to automatically detect haemorrhages and microaneurysms (treated as one group) and exudates.
Participants with pre-diabetes and retinopathy typically had a small number of microaneurysms in the eye characteristic of early, mild retinopathy that is not yet linked to vision loss.
The new software would allow this analysis to be carried out by a computer, with the programme ranking pictures according to the number of microaneurysms present.
Blocked capillaries cause localised areas of ischaemia with microaneurysms, and inflammation provokes oedema and hard exudates on the retina.
The retinopathy was mild in most patients, with just microaneurysms and/or retinal hemorrhages.
announced today that imaging data from a Phase 2 study of Macugen(R) (pegaptanib sodium injection) in diabetic macular edema (DME) showed a reversal of capillary microaneurysms, retinal ischemia and neovascularization -- all important signs of diabetic retinopathy.
Similarly, the proportions who had only microaneurysms were 10.
With the onset of retinopathy, these vessels weaken or bulge with microaneurysms that may hemorrhage, leaking blood or fluid into surrounding tissue causing blurred vision and even temporary blindness.
of the University of Melbourne's Centre for Eye Research, and associates examined the relationship between heart failure and signs of retinopathy including microaneurysms, retinal hemorrhages, and soft exudates (cotton-wool spots).
They may be the only physical sign in the fundus, or they may be seen in conjunction with other abnormalities which give a clue to the underlying aetiology, eg microaneurysms and flame-shaped haemorrhages in diabetes.
Approximately 15% were found to have focal arteriolar narrowing, 14% to have arteriovenous nicking, and 7% to have other microvascular abnormalities such as hemorrhages, exudates, and microaneurysms.
Look for microaneurysms, and often there are also scattered blot haemorrhages (Figure 3).