MeSH definition : 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.;
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.