Carcinoid Tumor of the Colon: Diagnosis and Treatment Tsutomu Ishikawa 1 1Department of Diagnostic Radiology, National Cancer Center Hospital pp.891-902
Published Date 1989/8/25
DOI https://doi.org/10.11477/mf.1403106531
  • Abstract
  • Look Inside
  • Cited by

 We experienced 43 lesions of carcinoid tumor of the colon at the National Cancer Center Hospital during 19 years until the end of 1988. Forty-two lesions were located in the rectum. Death cases due to carcinoid tumor included a case with invasion to the proper muscle and hepatic matastasis, a case with submucosal invasion, and another case complicated with rectal cancer. The larger the lesion, the more frequently there was a sharp area rather than smooth transition at the take-off from the surrounding mucosa and a depression. The frequency of malignancy, such as the one with invasion into the proper muscle, lymphnode metastasis, or hepatic metastasis, was higher among the cases with a depressed lesion. Ninety-five percent of the biopsy specimens were positive for carcinoid tumor. Follow-up examinations were possible in 4 cases: no changes in shape and size in 2 cases, increased size from 4 to 7 mm with invasion to the submucosa but without remote metastasis in 1 case, increased size from 13 to 25 mm with a central depression, invasion to the submucosa as well as hepatic metastasis resulting in death in 1 case. In most cases resection (such as polypectomy) of the tumor was possible either endoscopically or surgically. Malignant carcinoid tumor, however, necessitated curative surgery as applied to carcinoma. The tumor size and the presence of depression were considered important diagnostic indices associated with malignancy.

Copyright © 1989, Igaku-Shoin Ltd. All rights reserved.


電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院