A 58-year-old female was admitted diagnosed with gastric adenoma. Endoscopic findings revealed an adenoma with protruding lesion, approximately 15mm in length on the posterior wall of the gastric antrum. A EMR performed without abdominal pain or evidence of bleeding. A resected specimen was revealed Group III. Liquid antacid, thrombin, and ranitidine were prescribed with the patient initially responding well. However, five days after the EMR the patient experienced epigastric discomfort followed by massive tarry stool. Blood pressure indicated pronounced hemorrhagic shock with systoric pressure measuring 70mmHg. Emergency endoscopic hemostasis was performed using hemoclipping technique, however, aggrevated hemorrhaging resulted from the procedure. A partial gastrectomy was performed with subsequent histological findings revealing a bleeding ulcer (Ul II) .