Nobuhito Ito1, Kohei Funasaka2,3, Ryoji Miyahara1,4, Kazuhiro Furukawa1, Takeshi Yamamura1, Takuya Ishikawa1, Eizaburo Ohno1, Masanao Nakamura1, Hiroki Kawashima5, Yoshiki Hirooka4,5, Mitsuhiro Fujishiro1. 1. Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan. 2. Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan. k-funa@med.nagoya-u.ac.jp. 3. Department of Gastroenterology and Hepatology, Fujita Health University School of Medicine, 1-98 Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan. k-funa@med.nagoya-u.ac.jp. 4. Department of Gastroenterology and Hepatology, Fujita Health University School of Medicine, 1-98 Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan. 5. Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan.
Abstract
BACKGROUND: In Japan, endoscopic submucosal dissection (ESD) has been widely performed for ESD-adapted gastric cancer, but little is known about the prognostic factors after ESD for gastric cancer in older patients. The psoas muscle index (PMI) is an indicator of sarcopenia calculated from computed tomography images and reportedly related to the prognosis of some diseases. This study aimed to explore factors related to long-term survival after ESD for gastric cancer in patients aged ≥ 80 years. METHODS: We retrospectively reviewed 88 patients (63 men, 25 women) with early gastric cancer who underwent ESD at ≥ 80 years. Possible factors related to death after gastric ESD were analyzed by univariate and multivariate analyses using a Cox proportional hazards model. The estimated overall survival (OS) was compared between the groups stratified by significant factors. RESULTS: The 5-year OS rate was 73.9% (median follow-up period, 5.4 years). In the multivariate analysis, a low PMI (< 6.36 in men, < 3.92 in women) (hazard ratio [HR] 2.89, 95% confidence interval [CI] 1.11-7.54) and high Charlson comorbidity index (CCI) (≥ 3) (HR 1.87, 95% CI 1.14-3.09) were independently related to death after ESD. The 5-year OS rates were significantly higher in the high PMI group (82.3% vs. 70.7%, P = 0.026) and the low CCI group (76.0% vs. 37.9%, P = 0.002). CONCLUSION: In addition to low CCI, high PMI is a predictor of long-term survival after ESD for gastric cancer in patients aged ≥ 80 years.
BACKGROUND: In Japan, endoscopic submucosal dissection (ESD) has been widely performed for ESD-adapted gastric cancer, but little is known about the prognostic factors after ESD for gastric cancer in older patients. The psoas muscle index (PMI) is an indicator of sarcopenia calculated from computed tomography images and reportedly related to the prognosis of some diseases. This study aimed to explore factors related to long-term survival after ESD for gastric cancer in patients aged ≥ 80 years. METHODS: We retrospectively reviewed 88 patients (63 men, 25 women) with early gastric cancer who underwent ESD at ≥ 80 years. Possible factors related to death after gastric ESD were analyzed by univariate and multivariate analyses using a Cox proportional hazards model. The estimated overall survival (OS) was compared between the groups stratified by significant factors. RESULTS: The 5-year OS rate was 73.9% (median follow-up period, 5.4 years). In the multivariate analysis, a low PMI (< 6.36 in men, < 3.92 in women) (hazard ratio [HR] 2.89, 95% confidence interval [CI] 1.11-7.54) and high Charlson comorbidity index (CCI) (≥ 3) (HR 1.87, 95% CI 1.14-3.09) were independently related to death after ESD. The 5-year OS rates were significantly higher in the high PMI group (82.3% vs. 70.7%, P = 0.026) and the low CCI group (76.0% vs. 37.9%, P = 0.002). CONCLUSION: In addition to low CCI, high PMI is a predictor of long-term survival after ESD for gastric cancer in patients aged ≥ 80 years.