Giant pedunculated lipoma of the colon causing colo-colic intussusception in a young adult woman: a case report and review of the literature.

Colonic lipomas are uncommon benign submucosal tumours that are usually asymptomatic, but large lesions may act as a lead point for intussusception. We report a 36-year-old woman admitted with 2 days of epigastric pain and vomiting. Inflammatory markers were mildly raised and contrast-enhanced computed tomography showed a colo-colic intussusception of the transverse colon with an endoluminal fat-density mass as the lead point, without proximal distension. Because of the risk of bowel ischaemia she underwent urgent laparotomy; the intussusception reduced spontaneously and a right hemicolectomy with ileocolic anastomosis was performed. Recovery was uneventful and she was discharged on the fourth postoperative day. Histopathology confirmed a benign pedunculated lipoma (5.5 cm) with surface ulceration and no malignancy. Set against the published literature, this case shows that colonic lipoma should be considered in adult intussusception and that resection is both diagnostic and curative.