In 310 cases, foreign bodies were found 70.3%, spontaneous release was confirmed in 27.7% and 6 cases (2%) were injuried on the upper GI tract but were not found foreign bodies.
218ca (70,3%) nội soi phát hiện dị vật, 86 ca (27,7%) dị vật tự thoát và 06 ca (2%) có tổn thương ĐTH nhưng không tìm thấy dị vật.