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In medicine (gastroenterology), angiodysplasia is a small vascular malformation of the gut. It is a common cause of otherwise unexplained gastrointestinal bleeding and anemia. Lesions are often multiple, and frequently involve the cecum or ascending colon, although they can occur at other places.
Arterio refers to the arteries, which are the the blood vessels that take blood away from the heart, and venous refers to the veins, which carry blood toward the heart. Mal- means “badly”, so an arteriovenous malformation, or AVM, is some sort of “bad” or abnormal formation between the arteries and veins.
All fast-flow malformations are malformations involving arteries. They constitute about 14% of all vascular malformations. [2] Arterial malformation ; Arteriovenous fistula (AVF) : a lesion with a direct communication via fistulae between an artery and a vein. [3]
An arteriovenous malformation (AVM) is an abnormal connection between arteries and veins, bypassing the capillary system. Usually congenital , this vascular anomaly is widely known because of its occurrence in the central nervous system (usually as a cerebral AVM ), but can appear anywhere in the body.
Superior mesenteric artery compressing the duodenum, featuring the superior mesenteric artery syndrome. Superior mesenteric artery (SMA) syndrome is a gastro-vascular disorder in which the third and final portion of the duodenum is compressed between the abdominal aorta (AA) and the overlying superior mesenteric artery.
Cerebral angiography provides images of blood vessels in and around the brain to detect abnormalities, including arteriovenous malformations and aneurysms. [7] One common cerebral angiographic procedure is neuro-vascular digital subtraction angiography. [8] [9]
When abnormalities such as vascular malformation, capillary arteriovenous malformations (AVMs), arteriovenous fistulas (AVFs) and overgrowth of a limb occur together in combination and disturb the complex network of blood vessels of the vascular system, it is known as PWS. [5] The capillary malformations and AVFs are known to be present from ...
The treatment for Bonnet–Dechaume–Blanc syndrome is controversial due to a lack of consensus on the different therapeutic procedures for treating arteriovenous malformations. [9] The first successful treatment was performed by Morgan et al., [ 8 ] who combined intracranial resection, ligation of the ophthalmic artery , and selective ...