Site of lesions Type of lesions N.18 Cause of bleeding N.11 % (n=18) (n=11) Esophagus 3 16.70% Reflux esophagitis 2 Reflux esophagitis 0 0 Sliding hiatal hernia 1 Sliding hiatal hernia 0 0 Stomach 11 61.10% Erosive gastritis 6 Erosive gastritis 5 45.50% Gastric ulcer 2 Gastric ulcer 1 9.10% Angiodysplasia 3 Angiodysplasia 1 9.10% Duodenum 4 22.20% Hemorrhagic duodenitis 1 Hemorrhagic duodenitis 1 9.10% Erosive duodenitis 1 Erosive duodenitis 1 9.10% Duodenal ulcer 2 Duodenal ulcer 2 18.20%

Table 5: Shows results of the total EGD performed to 14 occult bleeding CHD patients according to site, type of lesion and cause of bleeding. A total 18 GI endoscopic lesions were found and tabled. According to site of the lesions, the most common site of lesions was stomach 11/18 lesions (61.1%), duodenum 4/18 lesions (22.2%), and esophagus 3/18 lesions (16.7%) respectively. Regarding the cause of bleeding, 11/14 patients (78.6%) had GI lesions explain occult bleeding. The most common cause of bleeding was gastro duodenal erosions 6/11 patients (54.5%), then peptic ulcer in 3/11 patients (27.3%) and one patient (9.1%) for each gastric angiodysplasia and hemorrhagic bulb duodenitis.