“…Rupture occurs into the biliary tract, the peritoneal cavity, or gastrointestinal tract. Gastrointestinal hemorrhage caused by rupture of HAAs is rare but has been reported (8)(9)(10)(11)(12). In these case reports, gastrointestinal endoscopy revealed no significant abnormality, and HAA was diagnosed on ultrasonography, CT scan, or angiography, as was the case in our patient.…”