Evaluation of Tumor Invasion in Gastric Carcinoma with CT Using Water as an Oral Contrast Agent in Prone Position.
10.3348/jkrs.1994.31.2.307
- Author:
Hyung Sik YOO
;
Byung Hee LEE
;
Jong Tae LEE
;
Jin Ill CHUNG
;
Jong Yup BAE
- Publication Type:Original Article
- MeSH:
Eating;
Humans;
Male;
Prone Position*;
Prospective Studies;
Stomach Neoplasms;
Water*
- From:Journal of the Korean Radiological Society
1994;31(2):307-312
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the accuracy of CT using water as an oral contrast material in a prone position in determining the depth of tumor invasion in gastric cancer patients. MATERIALS AND METHODS: Thirty three patients(19 male, 14 female) with surgically confirmed gastric cancer were studied. We performed CT in a prone position after ingestion of 1 liter of pure water. CT findings were classified into 4 groups by the morphologic appearances of infiltrates in the perigastric fat plane :normal perigastric fat(SO), fine mottled densities(S1), irregular aggregated or linear densities(S2) and direct extension and invasion of tumor into contiguous structures(S3). Also we prospectively compared the CT staging with pathologic T staging according to the TNM systems. RESULTS: The overall accuracy of CT staging in determining the pathologic T factor was 69.6%. As we regarded T1 and T2 lesions as one group on CT, the accuracy of CT staging was increased to 80.2% because of a limitation of CT for distinguishing T1 from T2 lesions. CONCLUSION: Prone position CT using water as an oral contrast agent is quite accurate in determining the T staging of gastric carcinoma.
