the lesion may be : infrequently , a ruptured esophageal varix or a gastroduodenal peptic ulcer ; a lesion of the cardia ( hiatal hernia , reflux , esophagitis , minimal traumatic tears ) ; a gastric anomaly ( hemorrhagic gastritis , superficial ulcerations , petechiae ) ; in some cases no mucosal lesion is apparent .
C0007144
cardia
C0038351
gastric