Colonic Lipoma Causing Bowel Intussusception: An Up-to-Date Systematic Review

Background: Colonic lipomas are rare and can sometimes cause intussusception. The aim of this review was to define the presentation and possible management for colocolic intussusception caused by colonic lipomas. Methods: A systematic search for patients with colocolic intussusception caused by colonic lipoma, including all available reports up to 2021. Epidemiological, clinical, laboratory, and instrumental data and details about the treatments performed were gathered. Results: Colocolic intussusception caused by lipoma is more frequent in women (57%), occurring between 40 and 70 years of age. Up to 83% of patients report abdominal pain, followed by constipation (18%), rectal bleeding (16%), and diarrhea (12%), with abdominal tenderness (37%), and distension in 16%, whereas 24% have a negative exploration. CT (72%) and colonoscopy (62%) are more commonly able to diagnose the entity. The most common location of intussusception is the transverse colon (28%). The surgical operation varies according to the site. The average dimensions of the lipoma are 59.81 × 47.84 × 38.9 mm3. Conclusions: A correct preoperative diagnosis of colonic lipoma causing intussusception might not be easy. Despite nonspecific clinical and laboratory presentation, cross-sectional imaging can help differential diagnosis. Surgical treatment depends on the localization.

EP.FRI.874 Laparoscopic Assisted Submucosal Excision of an Intussuscepted Colonic Lipoma through a Colotomy; A New Technique

Lipomas are the most common non-epithelial tumours of the colon. Nevertheless, symptomatic colonic lipomas are a rare entity in adults. Intussusception is the commonest complication of submucosal lipomas and often presents with absent, non-specific or intermittent symptoms, hence the diagnosis is challenging. In non-emergency situations, most patients undergo computed tomography scan as well as endoscopic evaluation of the colon prior to any surgical intervention. While successful endoscopic excision of lipomas has been reported, segmental resection of the colon is most commonly practiced. To the best of our knowledge, this is the first report of laparoscopic assisted submucosal excision of an intussuscepting colonic lipoma through a colotomy. We present the case of a young female patient with few weeks history of intermittent abdominal pain associated with nausea. She had previously undergone various investigations including colonoscopy and was awaiting an elective left hemicolectomy. She presented to our Emergency department with subacute large bowel obstruction. A CT scan confirmed the diagnosis of colo-colic intussusception due to a large descending colon lipoma. The patient underwent a laparoscopic assisted procedure - following laparoscopic colonic mobilisation, submucosal excision of the large lipoma was performed through a colotomy placed through the taenia on the opposite wall. The mucosal defect and colotomy were closed following the excision. The patient recovery was uneventful and histopathology of the specimen confirmed the diagnosis.

830 A Case of Colo-Colonic Intussusception Secondary to A Large Lipoma in An Adult

Colonic lipomas are benign tumours, most commonly in the right colon or caecum, usually detected incidentally at colonoscopy and are often asymptomatic not requiring treatment. Lipomas leading to intussusception have previously been described in case reports, but it remains a rare occurrence, no specific incidence data has been documented. We present the case of a patient with a 7cm colonic lipoma that developed an intussusception. This patient suffered non-specific pulling pain along the right and upper abdomen for many years. A distal ascending colonic lipoma was identified, on repeated imaging and colonoscopy and biopsied. It was concluded that the abdominal pain was due to gallstones, diverticulitis and adhesions from previous pelvic surgery. In early December 2020, the patient was reviewed and listed for elective cholecystectomy. Later the same month, the patient was admitted with severe abdominal pain, watery and bloody diarrhoea. CT scan showed the colonic lipoma had acted as the lead point for an intussusception, with the lipoma and surrounding colon having intussuscepted into the transverse colon. Patient had an open right hemicolectomy and anastomosis for colo-colic intussusception secondary to the lipoma. Subsequently, the patient developed anastomotic breakdown requiring relook laparotomy with resection of ileo-colic anastomosis and end ileostomy formation. Adults presenting with intussusception is rare and associated with nonspecific signs and symptoms. Variability in clinical presentation highlights the need for a low index of suspicion in people with known colonic masses. In addition, early surgical intervention should be considered in masses >4cm as previously suggested in the literature.

Therapeutic and diagnostic algorithm for colon lipoma

Clinical relevance: Colon lipomas are not rare tumors, but they occur with blurred clinical features and patients arrive with complications- obstructive intestinal obstruction or bleeding. In this regard, the authors presented a clinical case of a 57-yearold patient whose diagnosis was established only by morphological examination of the surgical material.The purpose of the study was to demonstrate clinical observation of colon lipoma.Materials and methods: The case history of a 57-year-old patient diagnosed with colonic lipoma is presented.