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Korean J Helicobacter  Up Gastrointest Res > Volume 13(3); 2013 > Article
The Korean Journal of Helicobacter  and Upper Gastrointestinal Research 2013;13(3):158-166.
DOI: https://doi.org/10.7704/kjhugr.2013.13.3.158    Published online September 10, 2013.
Usefulness of Positron Emission Tomography-Computerized Tomography Uptake according to Early Gastric Cancer Gross Morphology
Woo Seong Jeong, Hyun Joo Song, Soo Young Na, Sun Jin Boo, Eun Kwang Choi, Yoo Kyung Cho, Heung Up Kim, Byung Cheol Song, Jeong Won Lee, In Ho Jung
1Department of Internal Medicine, Jeju National University School of Medicine, Jeju, Korea. hyun-ju2002@hanmail.net
2Department of Nuclear Medicine, Jeju National University School of Medicine, Jeju, Korea.
3Department of Surgery, Jeju National University School of Medicine, Jeju, Korea.
조기 위암의 육안적 소견에 따른 양전자방출단층촬영의 유용성
정우성, 송현주, 나수영, 부선진, 최은광, 조유경, 김흥업, 송병철, 이정원1, 정인호2
제주대학교 의학전문대학원 내과학교실, 핵의학교실1, 외과학교실2
Abstract
BACKGROUND/AIMS
The role of 18F-fluorodeoxyglucose (18F-FDG) PET-CT for early gastric cancer (EGC) was undetermined due to its low sensitivity. The aim of this study was to assess the usefulness of 18F-FDG PET-CT according to endoscopic classification of EGC. MATERIALS AND METHODS: We retrospectively reviewed 206 patients who had undergone PET-CT due to gastric cancer from June 2009 to June 2012. Among those patients, 120 including 65 patients who underwent gastrectomy were analyzed. RESULTS: According to endoscopic gross morphology, 50 (41.7%) patients were classified as EGC and 70 (58.3%) patients were classified as advanced gastric cancer (AGC). Compared with the EGC group, the AGC group showed significantly higher rate of positive 18F-FDG uptake of primary lesions (98.6% vs. 28.0%, P<0.001) and lymph nodes (50.0% vs. 6.0%, P<0.001), and higher standardized uptake value max of primary lesions (7.65+/-3.51 vs. 4.82+/-2.18, P=0.012). Among 65 patients who underwent gastrectomy, PET-CT positive lesions were found in patients with tumor size greater than 3 cm (86.4% vs. 9.5%, P<0.001), lesions detected by stomach CT (90.9% vs. 9.5%, P<0.001) and PET-CT lymph node positive lesions (4.8% vs. 31.8%, P=0.025). Among 31 patients with EGC, elevated types (type I and IIa) showed no difference of positive 18F-FDG uptake compared with flat or depressed types (IIb, IIc, and III) (55.6% vs. 31.8%, P=0.253). CONCLUSIONS: 18F-FDG PET-CT has positive detection rate for EGC greater than 3 cm and there was no differences of 18F-FDG PET-CT uptake rates between elevated types and flat or depressed types of EGC.
Key Words: Stomach neoplasms; Positron emission tomography-computerized tomography
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