Prognostic factor and treatment strategy for clinical N1 non-small cell lung cancer

The aim of this study is to evaluate the surgical results of clinical N1 disease and to clarify the high-risk clinical N1 subgroup. Between 1990 and 2012, 137 patients who were clinically diagnosed as having N1 disease were enrolled. Their medical records were reviewed to assess clinical characteristics, radiologic findings, pathologic results, postoperative outcomes, recurrence patterns, and survival. Logistic regression analysis was used to...