title: Adenosquamous lung carcinoma: clinical characteristics, surgical treament and prognosis.
abstract: OBJECTIVE
  The effectiveness of surgical resection of adenosquamous carcinoma of the lung remains poorly defined because of the histology's relatively low frequency, the failure in most published series to separate adenosquamous carcinoma from the other variants of non-small cell lung carcinoma. To define the effectiveness of treatment of adenosquamous carcinoma, we have retrospectively reviewed our hospital experience over a 12-year period.
  
  
  METHODS
  Retrospectively reviewed 22 cases of adenosquamous carcinoma who were surgically treated, except one patient, in the PUMCH from Jan. 1985 to Aug. 1997. This series constitutes the 1.9% of a total of 1 245 patients with all types of surgical treatment for the primary lung cancer during the same time.
  
  
  RESULTS
  The adenosquanous carcinoma was mostly presented in the old patients with a mean age of 60 years and mostly located in the peripheral of lung (n = 20). The overall 5-year survival was 23%. Those with stage I tumors survival was only 18% (n = 13), stage II 5%. The survival in stage III tumos was not longer than 25 months and in stage IV survival was not longer than 12 months.
  
  
  CONCLUSIONS
  Our results suggest that adenosquamous carcinoma of lung was a virulent tumor, which exhibited highly aggressive biological behavior with early lymph nodes metastasis (46%) and its prognosis was worse than that of both squamous cell carcinoma and adenocarcinoma.
authors.affiliation: Department of Cardiothoracic Surgery, PUMC Hospital, CAMS & PUMC, Beijing 100730.
authors.forename: Y
authors.initials: Y
authors.lastname: Ben
authors.forename: H
authors.initials: H
authors.lastname: Yu
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: Q
authors.initials: Q
authors.lastname: Miao
authors.forename: H
authors.initials: H
authors.lastname: Ren
authors.forename: Z
authors.initials: Z
authors.lastname: Zhang
authors.forename: Z
authors.initials: Z
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D018196:Carcinoma, Adenosquamous / Q000401:mortality / Q000601:surgery*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality / Q000601:surgery*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D011013:Pneumonectomy; D011379:Prognosis; D012189:Retrospective Studies; D015996:Survival Rate