Source:http://linkedlifedata.com/resource/umls/id/C0345873
CSP: new abnormal rectosigmoid tissue, which is the tissue between the descending colon and the rectum, that grows by excessive cellular division and proliferation more rapidly than normal and continues to grow after the stimuli that initiated the new growth cease.,NCI: A benign or malignant neoplasm that affects the rectosigmoid region. Representative examples of benign neoplasms include lipoma and leiomyoma. Representative examples of malignant neoplasms include carcinoma, lymphoma, and sarcoma. Rectosigmoid adenomas always exhibit epithelial dysplasia and are considered premalignant neoplasms.