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Background  Lung carcinoid tumors are rare, low‐grade, malignant neoplasms with some unclear features.  T he aim of this study was to analyze clinicopathological features and long‐term survival in patients with primary lung carcinoid tumors.    Methods  Patients who underwent surgery in our clinic and were diagnosed with carcinoid tumors, between  A ugust 1997 and  J uly 2012, were included in the study.  P atient characteristics and clinicopathological factors were retrospectively evaluated.    Results  Bronchial carcinoids comprised only 1.0% of lung cancer cases treated by resection. They are classified into two distinct categories: typical carcinoid ( TC ) and atypical carcinoid ( AC ) tumors.  AC  tumors occurred more frequently in younger patients and in smokers, and had a poorer prognosis than  TC tumors . Overall three and five‐year survival rates for  TC  and  AC  were 92.6% and 81.1%, respectively. Univariate analysis showed that  t umor size (  P   = 0.012) and histological type (  P   = 0.013) are prognostic factors. Multivariate analysis revealed that only  tumor  size (  P   = 0.044) was an independent prognostic factor.    Conclusions  The prognosis for bronchial carcinoid  t umors was better than other types of lung cancer and  TC  was significantly better than  AC . Radical lymph node dissection was the best treatment, with complete removal of the tumor. Tumor size was an independent prognostic factor for bronchial  c arcinoid  t umors.

Clinicopathological characteristics and prognosis of resected cases of carcinoid tumors of the lung