TITLE

MRI of gastric carcinoma: Results of T and N-staging in an in vitro study

AUTHOR(S)
Il Young Kim; Sang Won Kim; Hyeong Cheol Shin; Moon Soo Lee; Dong Jun Jeong; Chang Jin Kim; Young Tong Kim; Kiichi Tamada
PUB. DATE
August 2009
SOURCE
World Journal of Gastroenterology;8/28/2009, Vol. 15 Issue 32, p3992
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
AIM: To determine the accuracy of 1.5-T magnetic resonance imaging (MRI) in the evaluation of gastric wall invasion and perigastric lymph node metastasis in gastric adenocarcinoma. METHODS: Twenty resected gastric specimens containing 20 tumors were studied with a 1.5-T MR system using a commercial head surface coil. MR scanning was performed with a T1 weighted image (TR/TE = 500/20), and a T2 weighted image (TR/TE = 2500/90). MR findings were compared with pathologic findings. RESULTS: A T1-weighted image demonstrated three layers in the normal gastric wall. All of the gastric tumors were well demonstrated by lesions and location. In a MRI findings of gastric wall invasion, there was 1 case of T1, 7 of T2, 11 of T3. Pathologic results of resected specimens included 3 cases of pT1, 4 of pT2, and 12 of pT3. The accuracy of T staging with MRI was 74% (14 of 19). MRI findings of lymph node metastasis included 6 cases of N0, 13 cases of N1. The accuracy of the N staging with MRI was 47% (9 of 19). CONCLUSION: MRI has a high diagnostic accuracy in the evaluation of the T staging of gastric cancer in vitro and thus potentially enables preoperative histopathologic staging.
ACCESSION #
44140669

 

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