患者女，５７岁。因右下腹部包块２年，发作性腹痛，腹胀、呕吐４个月而入院。４个月来腹痛共发作７次，均经保守治疗而好转，但右下腹包块仍存在。既往史：１９８８年１０月２５日因右乳癌而行右乳癌改良根治术，肿瘤大小为５５ｃｍ×３．５ｃｍ×２．０ｃｍ，术后病理... The patient is 57 years old. Due to the right lower abdomen mass for 2 years, episodes of abdominal pain, bloating, and vomiting were admitted to the hospital for 4 months. In the past 4 months, there have been 7 episodes of abdominal pain that have all improved after conservative treatment, but the right lower quadrant mass still exists. Past histories: October 25, 1988 for right breast cancer and right breast cancer modified radical mastectomy, tumor size 5  5cm × 3.5cm × 2.0cm, postoperative pathology ...