Postoperative pneumonia causes the loss of skeletal muscle volume and poor prognosis in patients undergoing esophagectom
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ORIGINAL ARTICLE
Postoperative pneumonia causes the loss of skeletal muscle volume and poor prognosis in patients undergoing esophagectomy for esophageal cancer Seiichiro Fujishima1 · Hironori Tsujimoto1 · Ken Nagata1 · Hidekazu Sugasawa1 · Shinsuke Nomura1 · Nozomi Ito1 · Manabu Harada1 · Takao Sugihara1 · Yusuke Ishibashi1 · Keita Kouzu1 · Hiroshi Shinmoto2 · Yoji Kishi1 · Hideki Ueno1 Received: 13 July 2020 / Accepted: 28 August 2020 © The Japanese Association for Thoracic Surgery 2020
Abstract Purposes This retrospective study investigated the effect of postoperative pneumonia on the loss of skeletal muscle volume after esophagectomy for esophageal cancer. Methods A total of 123 patients who had undergone esophagectomy for esophageal cancer and had (30 patients) or did not have (93 patients) postoperative pneumonia were included in the analysis. The association of clinicopathological characteristics with loss of skeletal muscle volume and long-term survival were evaluated in patients with or without postoperative pneumonia. Results There were no differences in the psoas muscle volume index (PI), lymphocyte count, serum albumin level, or prognostic nutritional index between the two groups both preoperatively and at 6 months after surgery. The decrease in PI at 6 months after surgery was significant in patients with postoperative pneumonia (− 9.9 ± 2.5%) but not in those without pneumonia (− 2.6 ± 1.6%). Patients with postoperative pneumonia had a significantly increased frequency of asymptomatic pneumonia at 6 months after surgery compared with those who did not have postoperative pneumonia (36.7% vs. 19.4%). Overall survival was significantly poorer in patients with postoperative pneumonia than in those without pneumonia (p
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