title: Limited pulmonary resection for peripheral small-sized adenocarcinoma of the lung.
abstract: BACKGROUND
  It was recently reported that a limited pulmonary resection (segmentectomy or wedge resection) was not inferior to a lobectomy in the management of peripheral small-sized adenocarcinoma (tumor ≦ 20 mm) of the lung.
  
  
  METHODS
  We retrospectively analyzed patients undergoing a lobectomy (n = 114) and a limited resection (n = 35) for peripheral small-sized adenocarcinoma of the lung during a 7-year period from April 2001 to March 2008. Our criteria for the limited resection of lung cancer were as follows: (1) adenocarcinoma of 10 mm or less in diameter and (2) adenocarcinoma of 11-20 mm in diameter, in which the ratio of the ground glass opacity is 50% or more, without pleural indentation on computed tomography. Additionally, the frozen sections of the tumors were intraoperatively diagnosed as Noguchi type A or B. The survival and clinical outcomes were analyzed.
  
  
  RESULTS
  The 5-year survival rates of the lobectomy group and limited resection groups were 89.2% and 100%, respectively. No recurrence was seen in the limited resection group.
  
  
  CONCLUSIONS
  Our results suggest that our criteria for limited resection were adequate for the management of small-sized adenocarcinoma of the lung.
authors.affiliation: Second Department of Surgery, University of Occupational and Environmental Health, School of Medicine, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan. y-ichiki@med.uoeh-u.ac.jp
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ichiki
authors.forename: Takeshi
authors.initials: T
authors.lastname: Hanagiri
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Baba
authors.forename: Tetsuya
authors.initials: T
authors.lastname: So
authors.forename: Kenji
authors.initials: K
authors.lastname: Ono
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Uramoto
authors.forename: Tomoko
authors.initials: T
authors.lastname: So
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Takenoyama
authors.forename: Kosei
authors.initials: K
authors.lastname: Yasumoto
mesh_terms: D000230:Adenocarcinoma / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008175:Lung Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D012189:Retrospective Studies; D016896:Treatment Outcome