Usefulness of CT in patients with ischemic colitis proximal to colonic cancer.

Usefulness of CT in patients with ischemic colitis proximal to colonic cancer. Research Abstract Details 

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Usefulness of CT in patients with ischemic colitis proximal to colonic cancer. Abstract Text:

G Y Ko,H K Ha,H J Lee,Y K Jeong,P N Kim,M G Lee,H R Kim,S K Yang,Y H Auh,

OBJECTIVE: The purpose of this study was to assess the usefulness of CT scans for distinguishing ischemic from tumoral segments in patients with colonic carcinoma complicated by proximal bowel ischemia. MATERIALS AND METHODS: CT scans of 20 patients with ischemic colitis proximal to obstructing colonic carcinoma were reviewed retrospectively. The concomitant presence of ischemia was proven on pathologic examinations in 12 patients and on barium enema studies in the remaining eight patients. CT scans were analyzed for the involved site and length, bowel wall thickness, enhancing pattern of both tumoral and ischemic segments, and changes in the pericolic space. The results of tumor staging on CT scans were compared with those of pathologic findings. RESULTS: Distinction of ischemic from tumoral segments could be made on CT in 15 (75%) of the 20 patients. Of the 20 patients, 18 had ischemic segments contiguously proximal to the tumoral segment, and the remaining two patients had a skipped zone with intervening normal mucosa. Tumoral segments were irregularly thickened in most patients. Maximum thickness ranged from 0.8 to 4.5 cm (mean, 2.0 cm). Most often the ischemic segment was concentrically and smoothly thickened, ranging from 0.6 to 1.5 cm (mean, 1.0 cm). The tumoral segments enhanced heterogeneously in 12 patients and enhanced homogeneously in the remaining eight, whereas ischemic segments enhanced homogeneously in 14 (70%) patients and heterogeneously in six. On CT scans, we saw the target or double halo sign in four (20%) patients. Pericolic vascular engorgement was 19 patients, two of whom were overstaged because pericolic vascular engorgement was interpreted as tumor infiltration. CONCLUSION: Although CT findings are not specific for certain groups of patients, they are often helpful in distinguishing tumoral from ischemic segments in patients with ischemic colitis proximal to colonic carcinoma. An understanding of this pathologic entity may increase the accuracy of CT for staging colonic carcinoma.

Usefulness of CT in patients with ischemic colitis proximal to colonic cancer. Publishing Authors By Initials

GY Ko,HK Ha,HJ Lee,YK Jeong,PN Kim,MG Lee,HR Kim,SK Yang,YH Auh,

For similar tomography, x-ray computed research abstracts see: tomography, x-ray computed research

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Usefulness of CT in patients with ischemic colitis proximal to colonic cancer. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJR. American journal of roentgenology

VOLUME: 168

Page Numbers: 951-6

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ISSN: 0361-803X

DAY: 15

MONTH: Apr

YEAR: 1997

Usefulness of CT in patients with ischemic colitis proximal to colonic cancer. Information

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LANGUAGE: eng

NlmUniqueID: 7708173

Usefulness of CT in patients with ischemic colitis proximal to colonic cancer. Keywords Mesh Terms:

KEYWORDS: Tomography, X-Ray Computed

MESH TERMS: radiography

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Grant and Affiliation Information for Usefulness of CT in patients with ischemic colitis proximal to colonic cancer.

AFFILIATION: Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Country: UNITED STATES

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MEDLINETA: AJR Am J Roentgenol

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