Colon linitis plastica

Gastrointestinal tract images These cancers are less common than those evolving via the adenoma-carcinoma sequence. A higher proportion develop in a setting of inflammatory bowel disease and radiation proctocolitis. Some are rather aggressive and when still small have already metastasized to the liver, but these are rare exceptions. Comparing flat adenomas and adenocarcinomas evaluated in Stockholm and Tokyo by the same pathologist, the Japanese lesions were more advanced with regard to dysplasia and were more aggressive, suggesting the presence of different geographic manifestations. Complicating the picture, in the United States a number of small, flat umbilicated tumors are hyperplastic polyps rather than neoplasms.
Linitis Plastica: The rare primary colorectal linitis plastica, or scirrhous carcinoma, usually develops in a setting of inflammatory bowel disease and in younger patients than more typical colon cancers. Metastases are not uncommon when such a primary tumor is first identified. Both colonoscopic and barium enema
findings can be subtle,with a typical appearance resembling a benign stricture. Computed tomography reveals these scirrhous carcinomas as circumferential, homogeneously enhancing lesions. The involved colon wall is thickened considerably. The sensitivity in detecting these lesions depends on tumor size and quality of CT study. Endoscopic US of rectal linitis plastica shows a circumferential thickening of the rectal wall, with thickening involving mostly the submucosa and muscularis propria; endoscopic US also detects perirectal fat infiltration. In general, breast and stomach carcinomas metastatic to the colon have a linitis plastica appearance more often than a primary colon scirrhous carcinoma.

This is radiology images of Colon linitis plastica.
Previous Post
Next Post

0 komentar: