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Clinicopathologic Characteristics of Interval Gastric Cancer in Korea
( Mi Sung Park ) , ( Ji Young Yoon ) , ( Hyun Soo Chung ) , ( Hyuk Lee ) , ( Jun Chul Park ) , ( Sung Kwan Shin ) , ( Sang Kil Lee ) , ( Yong Chan Lee )
Gut and Liver vol. 9 iss. 2 167-173(7pages)
UCI I410-ECN-0102-2015-500-002097338

Background/Aims: Interval gastric cancer (IGC) is defined as cancer that is diagnosed between the time of screening and postscreening esophagogastroduodenoscopy (EGD). Un-fortunately, little is known about the characteristics of IGC in Korea, a country with a high incidence of gastric cancer. The aim of this study was to evaluate the clinicopathologic char-acteristics of IGCs in Korea. Methods: From January 2006 to July 2011, a total of 81,762 subjects underwent screening EGD at Yonsei University Health Promotion Center, Seoul, Ko-rea. We defined missed cancer as cancer diagnosed within 1 year of screening EGD and latent cancer as cancer diag-nosed more than 1 year after EGD. Results: A total of 16 IGC patients (17 lesions; three missed cancers and 14 latent can-cers) were identified, with a mean age of 60.68 years and a mean interval time of 19.64 months. IGCs tended to be undifferentiated (12/17, 70.6%), located in the lower body of the stomach (12/17, 70.6%) and exhibited flat/depressed endoscopic morphology (11/17, 64.7%). The patients with missed cancer were generally younger than the patients with latent cancer (51.3 years vs 62.8 years, p=0.037), and the patients with undifferentiated cancer were significantly younger than those with differentiated cancer (57.0 years vs 68.8 years, p=0.008). Conclusions: IGCs tended to be undif-ferentiated, located in the lower body of the stomach, and exhibited flat/depressed endoscopic morphology. (Gut Liver, 2015;9:167-173)

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