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Telangiectasias (from tel- 'end' angi- 'blood vessel' and ectasia 'the expansion of a hollow or tubular organ'), also known as spider veins, are small dilated blood vessels [1] that can occur near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter. [2]
Microangiopathy (also known as microvascular disease, small vessel disease (SVD) or microvascular dysfunction) is a disease of the microvessels, small blood vessels in the microcirculation. [1] It can be contrasted to macroangiopathies such as atherosclerosis , where large and medium-sized arteries (e.g., aorta , carotid and coronary arteries ...
A spider angioma or spider naevus (plural: spider naevi), also nevus araneus, is a type of telangiectasis [2] (swollen, spider-like blood vessels on the skin) found slightly beneath the skin's surface, often containing a central red spot and deep reddish extensions (see Blood color) which radiate outwards like a spider's web or a spider's legs.
(Hemodynamics is the study of blood flow and of the laws that govern the circulation of blood in the blood vessels.) [5] It follows that the examiner's knowledge of venous hemodynamics is crucial, which can be a real barrier to a radiologist, untrained in this field, who might wish to carry out these examinations.
Peripheral veinous disease, on the other hand, refers to problems with veins—the vessels that bring the blood back to the heart. [18] The classic symptom is leg pain when walking, which resolves with rest and is known as intermittent claudication. [2]
Pain, aching, heaviness, or cramping in their legs when climbing stairs or with physical activity. ... Your doctor will make a small incision into this blood vessel. AnnaStills/Istockphoto.
Angiopathy is the generic term for a disease of the blood vessels (arteries, veins, and capillaries). [1] This also refers to the condition of damage or rupture of small blood vessels. The best known and most prevalent angiopathy is diabetic angiopathy, a common complication of chronic diabetes.
Most vessels of the microcirculation are lined by flattened cells of the endothelium and many of them are surrounded by contractile cells called pericytes.The endothelium provides a smooth surface for the flow of blood and regulates the movement of water and dissolved materials in the interstitial plasma between the blood and the tissues.