Comparison of advanced adenocarcinomas of esophagogastric junction and distal stomach in Japanese patients

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Abstract

Background: There have been no reports on the incidence, characteristics, treatment outcomes, and prognosis of inoperably advanced or recurrent adenocarcinoma of the esophagogastric junction (AEGJ) in Japan. Methods: We investigated the clinicopathological characteristics, treatment outcomes, and prognosis for 816 patients with esophagogastric junctional and gastric adenocarcinoma who received first-line chemotherapy between 2004 and 2009. Results: Of 816 patients, 82 (10 %) had AEGJ. The patients with AEGJ had significantly more lung and lymph node metastasis, but less peritoneal metastasis, than those with gastric adenocarcinoma (GAC). The objective response rate to first-line chemotherapy was 23.3 % for patients with AEGJ and 22.6 % in patients with GAC (p = 0.90). The median survival was 13.0 months in AEGJ and 11.8 months in GAC (p = 0.445). In no patient was tumor site a significant prognostic factor (p = 0.472). In patients with AEGJ, ECOG PS ≥ 2, presence of liver metastasis, and absence of lung metastasis were significantly associated with poor prognosis. Conclusions: No significant differences were observed in treatment outcomes between advanced AEGJ and GAC. Therefore, the same chemotherapy regimen can be given as a treatment arm in future Japanese clinical trials to both patients with inoperably advanced or recurrent AEGJ and those with GAC. © 2013 The International Gastric Cancer Association and The Japanese Gastric Cancer Association.

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Kawano, A., Nakajima, T. E., Oda, I., Hokamura, N., Iwasa, S., Kato, K., … Shimada, Y. (2014). Comparison of advanced adenocarcinomas of esophagogastric junction and distal stomach in Japanese patients. Gastric Cancer, 17(1), 54–60. https://doi.org/10.1007/s10120-013-0238-x

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