患者女性，６２岁。主诉上腹痛伴反酸４个月。４个月前，无明显诱因出现上腹隐痛伴反酸、烧心，疼痛于进餐后明显，无放射痛，无恶心呕吐。体检及实验室检查无异常发现。胃双重对比造影显示胃角前壁３．５ｃｍ×３ｃｍ的粘膜结节不平，胃小区增大，大小不等，形态不整，胃... Female patient, 62 years old. She complained of upper abdominal pain with acid reflux for 4 months. 4 months ago, there was no obvious cause of upper abdominal pain with acid reflux, heartburn, pain after meal, no radiating pain, no nausea and vomiting. There was no abnormality in physical examination and laboratory examination. Double contrast imaging of the stomach showed that the mucous nodule with 3.5cm × 3cm in the anterior wall of the antrum was uneven, the stomach area was enlarged, the size was not equal, the shape was not complete, stomach...