title: Second primary digestive cancer after resection of lung cancer.
abstract: OBJECTIVE
  We evaluated the clinical findings of patients with second primary digestive cancers (SPDC) after the resection of lung cancer.
  
  
  METHODS
  Among 772 patients who underwent resection of primary lung cancer at Saitama Cardiovascular and Respiratory Center between 1993 and 2002, 10 (1.3%) were diagnosed with SPDC during follow-up. These ten patients were classified into two groups based on whether the SPDC was incidentally (group I) or symptomatically (group S) diagnosed.
  
  
  RESULTS
  The median interval to the detection of SPDC was 17 months in group I and 66 months in group S, and the disease was at an earlier stage in group I than in group S ( P = 0.008). Comparing body weight at the time of lung resection to that at the time of abdominal surgery, significant weight loss was evident in group S ( P = 0.009). The postoperative disease-specific survival rate was 100% in group I. No long-term survivor died of lung cancer.
  
  
  CONCLUSIONS
  Special attention must be paid to the possibility of SPDC after the resection of lung cancer to improve the prognosis of patients with lung cancer.
authors.affiliation: Department of Surgery, Saitama Cardiovascular and Respiratory Center, 1696 Itai, Konan-machi, Saitama 360-0105, Japan.
authors.forename: Hidenori
authors.initials: H
authors.lastname: Kamiyama
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Ikeya
authors.forename: Kazuharu
authors.initials: K
authors.lastname: Suda
authors.forename: Katsumi
authors.initials: K
authors.lastname: Murai
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Aoyama
authors.forename: Eishin
authors.initials: E
authors.lastname: Hoshi
mesh_terms: D000230:Adenocarcinoma / Q000601:surgery*; D002294:Carcinoma, Squamous Cell / Q000601:surgery*; D003110:Colonic Neoplasms / Q000453:epidemiology; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000453:epidemiology* / Q000601:surgery; D006801:Humans; D008175:Lung Neoplasms / Q000601:surgery*; D008297:Male; D009367:Neoplasm Staging; D016609:Neoplasms, Second Primary / Q000453:epidemiology*; D011379:Prognosis; D012004:Rectal Neoplasms / Q000453:epidemiology; D013274:Stomach Neoplasms / Q000453:epidemiology