Enteroenteric intussusception caused by metastatic tumors is a very ra
re condition. Because of its rarity and rather mild abdominal physical
presentation, preoperative diagnosis is not easily made. Two cases of
enteric intussusception due to metastatic intestinal turners, with th
e main symptom of melena, are reported. Intussusception was caused by
metastatic liposarcoma in one patient and metastatic melanoma in the o
ther. Both patients had long histories of malignant disease, for 15 an
d 8 years, respectively. They had undergone repeated surgical treatmen
t for metastatic lesions. The diagnosis of enteric intussusception was
initially made by computed tomographic scans and small bowel series a
nd was confirmed by laparotomy and pathologic findings. We suggest tha
t tumor metastasis to the small intestine with intussusception should
be considered in patients with recurrent tumors and tarry stools.