The exact pathogenesis of<unk>  is unknown. It has been proposed that chronic obstruction of submucosal veins coupled with the effect of aging, ultimately lead to the formation of small arterio-venous collaterals. Angiogenic factors have also been found to play a role in the development of<unk> .
Angiodysplasia pathophysiology
Angiodysplasia risk factors
Atherosclerosis pathophysiology
Varicose veins pathophysiology
Thrombosis pathophysiology
Gastrointestinal varices pathophysiology
Portal vein thrombosis pathophysiology
Lower gastrointestinal bleeding pathophysiology