Colon vascular dysplasia
Introduction
Introduction Angiogenesis plaque (angiodysplasia, AD) is known to be recognized in the colon. It is now known to be the most common cause of chronic intermittent or acute lower gastrointestinal bleeding in elderly people over 60 years of age, and is the most common cause of gastrointestinal bleeding. .
Cause
Cause
In general, the exact pathogenesis of AD is still unclear, presumably an acquired disease secondary to connective tissue abnormalities, chronic venular obstruction caused by elevated pressure in the intestinal wall, arteriosclerosis or Localized mucosal hypoxia caused by low cardiac output. It is believed that vascular dysplasia mainly occurs in the right colon because of the increased tension of the intestinal wall.
Examine
an examination
Related inspection
Colonoscopy fiber colonoscopy
The diagnosis depends on angiography and colonoscopy. Mesenteric + celiac angiography, the results suggest that the superior branch of the superior mesenteric artery collateral branch is irregularly thickened and distorted, and irregularly disordered capillary vessels can be seen locally.
X-ray diagnosis: the vasoconstriction of the superior mesenteric artery is thickened and localized.
Diagnosis
Differential diagnosis
Intestinal vascular malformation: vascular malformation of intestine, including arteriovenous malformation, vasodilation, hemangioma, vascular dysplasia, etc., is one of the causes of acute or chronic lower gastrointestinal bleeding, often abnormal blood vessels themselves It can also be one of the manifestations of a systemic condition or a syndrome. Clinical manifestations of colonic vascular dysplasia include: severe hemorrhage affecting hemodynamics, melena, stool OB (+), iron deficiency anemia. The severity of bleeding in the same patient at different times is different, most of the bleeding can stop on its own, and the possibility of repeated bleeding is still uncertain.
