title: [Oncocytic carcinoid tumor of the lung: clinical and pathological characteristics].
abstract: OBJECTIVE
  To describe the clinical and pathological characteristics and the differential diagnosis of oncocytic carcinoid tumor of the lung (OCTL).
  
  
  METHODS
  The histopathological and immunochemical changes of 3 cases of OCTL were studied, and the clinical data and related literature were reviewed.
  
  
  RESULTS
  The 3 patients were all males, aged 32 - 73 years. Cough, sputum and hemoptysis were the major clinical manifestations. The cytopathology examination showed that the tumor cells were arranged in masses with a large amount of intracellular eosinophilic granules. The immunochemistry showed the expression of neurocrine markers such as NSE, Syn and CgA.
  
  
  CONCLUSIONS
  OCTL is a rare malignant tumor. Histopathology, immunochemistry and electronic microscopic examination play important roles in the diagnosis and differential diagnosis of this tumor.
authors.affiliation: Department of Oncology, Second Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Shen
authors.forename: Yan-Biao
authors.initials: YB
authors.lastname: Fu
authors.forename: Hui-Ying
authors.initials: HY
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D002276:Carcinoid Tumor / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology; D008297:Male; D008875:Middle Aged