Intestinal angiodysplasia involves –
Correct Answer: AV malformation
Description: Ans. is 'a' i.e., AV malformationAngiodysplasia is characterized by malformed submucosal blood vessels (AV malformation).Lesions of angiodysplasia are ectatic nest of touous veins, venules and capillaries.Most common site is caecum and right colon.Usually occurs after 6th decade of life.Major presentation is bleeding (intestinal bleeding).Pathogenesis of angiodysplasia has been linked to mechanical and congenital factors :?1. Mechanical factor Normal distension and contraction intermittently occlude submucosal veins and leads to dilatation and touosity of overlying vessels. Because cecum has the largest diameter, it develops the greatest wall tension. Therefore cecum is the most common site for angiodysplasia.2. Genetic (developmental) factor Some data link angiodysplasia with aoic sstenosis and Meckel diveiculum suggesting the possibility of a developmental component.
Category:
Pathology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now