Kim IY, Kim SW, Shin HC, Lee MS, Jeong DJ, Kim CJ, Kim YT. MRI of gastric carcinoma: Results of T and N-staging in an in vitro study. World J Gastroenterol 2009; 15(32): 3992-3998 [PMID: 19705493 DOI: 10.3748/wjg.15.3992]
Corresponding Author of This Article
Il Young Kim, MD, PhD, Department of Radiology, Soonchunhyang University Cheonan Hospital, Cheonan, Choongnam 330-720, South Korea. ilykim@schca.ac.kr
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World J Gastroenterol. Aug 28, 2009; 15(32): 3992-3998 Published online Aug 28, 2009. doi: 10.3748/wjg.15.3992
MRI of gastric carcinoma: Results of T and N-staging in an in vitro study
Il Young Kim, Sang Won Kim, Hyeong Cheol Shin, Moon Soo Lee, Dong Jun Jeong, Chang Jin Kim, Young Tong Kim
Il Young Kim, Sang Won Kim, Hyeong Cheol Shin, Young Tong Kim, Department of Radiology, Soonchunhyang University Cheonan Hospital, 23-20 Bongmyungdong, Cheonan, Choongnam 330-720, South Korea
Moon Soo Lee, Department of Surgery, Soonchunhyang University Cheonan Hospital, 23-20 Bongmyungdong, Cheonan, Choongnam 330-720, South Korea
Dong Jun Jeong, Chang Jin Kim, Department of Pathology, Soonchunhyang University Cheonan Hospital, 23-20 Bongmyungdong, Cheonan, Choongnam 330-720, South Korea
Author contributions: Kim IY, Kim CJ, and Lee MS performed the majority of study; Kim IY, Kim SW and Kim YT designed the research; Kim IY, Jeong DJ, and Kim CJ performed research; Kim SW, Shin HC analyzed data; Kim IY, Kim CJ and Kim SW were involved in editing the manuscript; Kim IY wrote the manuscript.
Correspondence to: Il Young Kim, MD, PhD, Department of Radiology, Soonchunhyang University Cheonan Hospital, Cheonan, Choongnam 330-720, South Korea. ilykim@schca.ac.kr
Telephone: +82-41-5703501
Fax: +82-41-5746265
Received: June 29, 2009 Revised: July 17, 2009 Accepted: July 24, 2009 Published online: August 28, 2009
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.
