Pulmonary arteriovenous malformations (PAVMs) are abnormal connections of the pulmonary artery to the pulmonary vein, which bypass the normal pulmonary capillary bed.1 This leads to a right-to-left shunt the diameter of the feeding vessel. The normal pulmonary capillary bed measures only 8 to 10 mcm in diameter and serves not only to oxygenate blood but also to filter small thrombi and bacteria...

background: arteriovenous malformations are one of the most common vascular disorders of the colon. vascular disorders present as painless, high-volume rectal bleeding. case presentation: this study elucidates two rare cases of vascular disorders that are diagnosed as angiodysplasia of the left colon and cavernous hemangioma of the colon and rectum.  the chief complaint in two patients was rect...

INTRODUCTION Pregnancy has been linked to increased rates of arteriovenous malformation rupture. This link remains a matter of debate and very few studies have addressed the management of arteriovenous malformation in pregnancy. Unruptured arteriovenous malformations in pregnant woman generally warrant conservative management due to the low rupture risk. When pregnant women present with rupture...

Hereditary haemorrhagic telangiectasia (HHT) is an autosomal dominant disorder characterised by vascular malformations in multiple organ systems, resulting in mucocutaneous telangiectases and arteriovenous malformations predominantly in the lungs (pulmonary arteriovenous malformation; PAVM), brain (cerebral arteriovenous malformation; CAVM), and liver (hepatic arteriovenous malformation; HAVM)....