Most patients who are eventually diagnosed with watermelon stomach come to a physician complaining of anemia and blood loss. Sometimes, a patient may come to the physician because he or she notices blood in the stools—either melena (black and tarry stools) and/or hematochezia (red bloody stools).
Gastric antral vascular ectasia
Esophageal intramural pseudodiverticulosis
Foreign body in alimentary tract
Intestinal neuronal dysplasia
Autoimmune gastrointestinal dysmotility
Rectal foreign body
Multifocal stenosing ulceration of the small intestine
Retained antrum syndrome