BACKGROUND: Before endoscopic resection (ER), a considerable number of undifferentiated early gastric cancer (UD-EGC) cases were initially diagnosed as atypical glands, dysplasia, or differentiated EGC (D-EGC) based on forceps biopsy specimens. As UD-EGC carries a high risk of resection margin involvement, identifying the predictive factors for UD-EGC cases with histologic discrepancy (HD) is of clinical importance. AIMS: To investigate the outcomes of ER for UD-EGC and to identify the predictive factors for UD-EGC with HD. METHODS: Among 2,194 EGC lesions treated by ER, 59 lesions were finally diagnosed as UD-EGC and 50 UD-EGC cases showed HD. The demographic and endoscopic characteristics were compared between D-EGC and UD-EGC with HD, and the predictive factors for the latter were investigated among cases of forceps biopsy-based diagnosis of atypical glands, dysplasia, or D-EGC. RESULTS: UD-EGC showed significantly higher rate of lateral margin involvement compared to D-EGC (18.6 vs. 3.4%). Among the UD-EGC cases meeting the expanded criteria and not involving additional surgery, no local or extragastric tumor recurrence was observed during the median follow-up of 27.5 months. Multivariate analysis demonstrated that age (≤60 years), female gender, gastric body, flat or depressed type, and tumor size (>2 cm) were independent predictive factors for UD-EGC with HD among cases of forceps biopsy-based diagnosis of atypical glands, dysplasia, or D-EGC. CONCLUSIONS: For lesions with predictive factors for UD-EGC with HD, a circumferential mapping biopsy before ER or wide marking during ER could be considered to avoid the potential risk of incomplete resection.
BACKGROUND: Before endoscopic resection (ER), a considerable number of undifferentiated early gastric cancer (UD-EGC) cases were initially diagnosed as atypical glands, dysplasia, or differentiated EGC (D-EGC) based on forceps biopsy specimens. As UD-EGC carries a high risk of resection margin involvement, identifying the predictive factors for UD-EGC cases with histologic discrepancy (HD) is of clinical importance. AIMS: To investigate the outcomes of ER for UD-EGC and to identify the predictive factors for UD-EGC with HD. METHODS: Among 2,194 EGC lesions treated by ER, 59 lesions were finally diagnosed as UD-EGC and 50 UD-EGC cases showed HD. The demographic and endoscopic characteristics were compared between D-EGC and UD-EGC with HD, and the predictive factors for the latter were investigated among cases of forceps biopsy-based diagnosis of atypical glands, dysplasia, or D-EGC. RESULTS:UD-EGC showed significantly higher rate of lateral margin involvement compared to D-EGC (18.6 vs. 3.4%). Among the UD-EGC cases meeting the expanded criteria and not involving additional surgery, no local or extragastric tumor recurrence was observed during the median follow-up of 27.5 months. Multivariate analysis demonstrated that age (≤60 years), female gender, gastric body, flat or depressed type, and tumor size (>2 cm) were independent predictive factors for UD-EGC with HD among cases of forceps biopsy-based diagnosis of atypical glands, dysplasia, or D-EGC. CONCLUSIONS: For lesions with predictive factors for UD-EGC with HD, a circumferential mapping biopsy before ER or wide marking during ER could be considered to avoid the potential risk of incomplete resection.
Authors: K Okada; J Fujisaki; T Yoshida; H Ishikawa; T Suganuma; A Kasuga; M Omae; M Kubota; A Ishiyama; T Hirasawa; A Chino; M Inamori; Y Yamamoto; N Yamamoto; T Tsuchida; Y Tamegai; A Nakajima; E Hoshino; M Igarashi Journal: Endoscopy Date: 2012-01-23 Impact factor: 10.093
Authors: Jong Chan Youn; Young Hoon Youn; Tae Il Kim; Seung Woo Park; Se Joon Lee; Si Young Song; Jae Bock Chung; Youn Chan Lee; J C Youn; Y H Youn Journal: Hepatogastroenterology Date: 2006 Jul-Aug
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Authors: H Isomoto; S Shikuwa; N Yamaguchi; E Fukuda; K Ikeda; H Nishiyama; K Ohnita; Y Mizuta; J Shiozawa; S Kohno Journal: Gut Date: 2008-11-10 Impact factor: 23.059
Authors: Chan Sik Won; Mee Yon Cho; Hyun Soo Kim; Hye Jeong Kim; Ki Tae Suk; Moon Young Kim; Jae Woo Kim; Soon Koo Baik; Sang Ok Kwon Journal: Gut Liver Date: 2011-06-23 Impact factor: 4.519