title: Segmentectomy for roentgenographically occult bronchogenic squamous cell carcinoma.
abstract: BACKGROUND
  Roentgenographically occult bronchogenic squamous cell carcinomas (ROSCCs) are early squamous cell lung cancers of central type. Some of them cannot be treated with intrabronchial therapy. Although surgical treatment was performed for such tumors, it was unknown whether lobectomy was indispensable or not.
  
  
  METHODS
  The clinicopathologic information of the 58 patients who underwent segmentectomy for ROSCCs were collected from 16 hospitals and reviewed retrospectively, compared with 98 patients who underwent lobectomy for ROSCCs.
  
  
  RESULTS
  Five-year survival rate of the 58 patients based on lung cancer deaths was 96.8%, and 82.6% including all causes of death. The duration of chest tube drainage in the segmentectomy group was slightly longer than in the lobectomy group. Operative mortality and the frequency of postoperative complications were not statistically different in both groups. Postoperative/preoperative vital capacity and forced expiratory volume in 1 second were higher in the segmentectomy group.
  
  
  CONCLUSIONS
  These results suggest that segmentectomy may be an alternative for surgical therapy of carefully selected ROSCCs. More prospective studies are required to fully demonstrate clinical benefit.
authors: Lung Cancer Surgical Study Group, Japan. sagawam@idac.tohoku.ac.jp
authors: M
authors: M
authors: Sagawa
authors: T
authors: T
authors: Koike
authors: M
authors: M
authors: Sato
authors: M
authors: M
authors: Oda
authors: T
authors: T
authors: Kondo
authors: H
authors: H
authors: Kato
authors: R
authors: R
authors: Tsuchiya
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002283:Carcinoma, Bronchogenic / Q000000981:diagnostic imaging / Q000401:mortality / Q000473:pathology* / Q000601:surgery*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000401:mortality / Q000473:pathology* / Q000601:surgery*; D003625:Data Collection; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000401:mortality / Q000473:pathology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011013:Pneumonectomy / Q000379:methods*; D011336:Probability; D011859:Radiography; D012129:Respiratory Function Tests; D012189:Retrospective Studies; D017678:Sex Distribution; D016019:Survival Analysis; D016896:Treatment Outcome