Some cases of intestinal intussusception occur secondary to a benign or malignant tumor. These cases need to be distinguished from those cases where no masses are evidence.
Benign tumors may include:
(1) lipoma
(2) leiomyoma
(3) adenomatous polyp
(4) neurofibroma
(5) hemangioma
(6) lymphoid tissue hyperplasia
Malignant tumors may include:
(1) adenocarcinoma
(2) neuroendocrine tumor
(3) sarcoma (leiomyosarcoma, other)
(4) lymphoma
Intussusception of the small bowel usually involves a bengin tumors while intussusception of the large bowel usually involves a malignant tumor.
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