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What is A 52 year-old man presented with acute upper GI bleed. Ultrasound study of abdomen was normal. At gastroscopy an intermittent pulsatile stream of blood was identified, with no underlying lesion visible between bleeding spus except for a following is likely diagnosis? and explain in detail?
GAVE (Gastric antral vascular ectasia. is "watermelon stomach", Dieulafoy's lesion is an aberrant vessel in the gastric mucosa that bleeds from a pinpoint mucosal defect). GAVE is a cause of chronic upper GI bleed, while Dieulafoy's malformation results in acute upper GI bleed as in the given case.