title: Prolapsed giant sigmoid lipoma: a rare cause of adult ischaemic intussusception.
abstract: Intussusception is a rare cause of obstruction in adults and has a variable, non-specific presentation. Adult intussusception is usually associated with an underlying organic pathology, such as a benign or malignant tumour which acts as the lead point. Prolapse of the lead-point mass through the anal canal is an extremely rare presentation with very few reported cases in the literature. We describe a case of a 67-year-old man who presented with rectal prolapse of a large soft tissue mass. CT of the abdomen and barium enema revealed partial intussusception of an upper sigmoid lipomatous polyp. Examination under anaesthesia was performed and the prolapse reduced. A laparoscopic sigmoid colectomy was planned. The patient subsequently re-presented clinically unwell with a recurrent necrotic prolapsing mass. Laparotomy and sigmoid colectomy was performed and the patient recovered fully. The resected mass was a 7×4.5×4.0 cm necrotic sigmoid lipoma.
authors.affiliation: Department of Surgery, Causeway Hospital, Coleraine, Northern Ireland, UK.
authors.forename: Mark
authors.initials: M
authors.lastname: Elliott
authors.affiliation: Department of Surgery, Causeway Hospital, Coleraine, Northern Ireland, UK.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Martin
authors.affiliation: Department of General Surgery, Causeway Hospital, Coleraine, Northern Ireland, UK.
authors.forename: Fred
authors.initials: F
authors.lastname: Mullan
mesh_terms: D000368:Aged; D003082:Colectomy / Q000379:methods; D003937:Diagnosis, Differential; D006801:Humans; D007443:Intussusception / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D010535:Laparoscopy; D008067:Lipoma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008297:Male; D012810:Sigmoid Diseases / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D012811:Sigmoid Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D014057:Tomography, X-Ray Computed