Source:http://linkedlifedata.com/resource/umls/id/C0267211
MSH: A distinct vascular lesion in the PYLORIC ANTRUM that is characterized by tortuous dilated blood vessels (ectasia) radiating outward from the PYLORUS. The vessel pattern resembles the stripes on the surface of a watermelon. This lesion causes both acute and chronic GASTROINTESTINAL HEMORRHAGE.,NCI: Dilatation of the vessels in the antrum of the stomach. It is associated with portal hypertension, scleroderma, and chronic renal failure. It may cause gastric bleeding.