• Toshihiko Sato, Atsushi Watanabe, Haruhiko Kondo, Masato Kanzaki, Kenichi Okubo, Kohei Yokoi, Kazuya Matsumoto, Takashi Marutsuka, Hirohiko Shinohara, Satoshi Teramukai, Kazuma Kishi, Masahito Ebina, Yukihiko Sugiyama, Okumora Meinoshin, Hiroshi Date, and Japanese Association for Chest Surgery.
• Department of Thoracic Surgery, Kyoto University, Kyoto, Japan.
• J. Thorac. Cardiovasc. Surg. 2015 Jan 1; 149 (1): 64-9, 70.e1-2.

ObjectivesPatients with interstitial lung diseases have a poor prognosis and are at increased risk of developing lung cancer. We evaluated the survival and predictors of survival after surgical resection in lung cancers in patients with interstitial lung diseases.MethodsWe retrospectively analyzed data from 1763 patients with non-small cell lung cancer with a clinical diagnosis of interstitial lung disease who underwent pulmonary resection between 2000 and 2009 at 61 Japanese institutions.ResultsMale patients (90.4%) and smokers (93.8%) were in the majority. The overall 5-year survival was 40%. The 5-year survivals were 59%, 42%, 43%, 29%, 25%, 17%, and 16% for patients with stage Ia, Ib, IIa, IIb, IIIa, IIIb, and IV, respectively. Patients with stage IA had a 5-year survival of 33.2%, 61.0%, and 68.4% in the wedge resection, segmentectomy, and lobectomy groups, respectively (log-rank test, P = .0038). The leading cause of death was cancer recurrence (50.2%), followed by respiratory failure (26.8%). Wedge resection reduced mortality due to respiratory failure when compared with that of lobectomy (P = .022). Multivariable analysis revealed that the type of surgical procedure, predicted percent vital capacity, and tumor locations were independent predictors for survival. The 5-year survival was 20% for patients with stage Ia with a predicted percent vital capacity of 80% or less, and 64.3% for patients with a predicted percent vital capacity greater than 80% (log-rank test, P < .0001).ConclusionsIn these patients, there are competing risks of death. Wedge resection reduced death caused by respiratory failure but resulted in poorer long-term prognosis than lobectomy. For patients with poor predictors of survival, such as predicted percent vital capacity of 80% or less, surgical resection should be limited.Copyright © 2015 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

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