Recurrent intussusception of small bowel in a young patient due to metastases from cardiac undifferentiated pleomorphic sarcoma: A first ever case report.

Background: Undifferentiated metastatic pleomorphic sarcoma (Malignant Fibrous Histiocytoma) is a rare entity in the small intestine, especially when the primary tumor is of cardiac origin.

Methods: We report a case of metastatic intestinal undifferentiated pleomorphic sarcoma in a young patient with a history of primary cardiac tumor in the left atrium and recurrent small bowel intussusception. He was admitted for abdominal pain and constipation. A segmental resection of the small intestine was performed with side-to-side entero-enteroic anastomosis.

Conclusions: Intussusception of the small bowel is rare in adults and it represents about 1-3% of intestinal obstructions. It mainly affects the fifth decade with a male/female ratio of 1:5 More than 60% of patients with intussusception have a tumor with 50% being malignant. This type of intussusception can be diagnosed on the CT abdominalscan. Radiological features include a typical "target" sign with overdistention of the proximal intestine and air-fluid levels, but the diagnosis of certainty is made by exploratory laparotomy. Conclusions: The metastatic tumors that cause intussusception represent a rare clinical condition in adult patients, but much more common than primary ones. Metastasis to the small intestine are part of differential diagnosis in patient with a history of tumor who present with intussusception.