title: [Non-small cell bronchogenic cancer in stage IA: mortality patterns after surgery].
abstract: OBJECTIVE
  To determine the causes of death in patients treated surgically for nonsmall cell lung cancer (NSCLC) in stage IA and to evaluate the impact on survival of not performing systematic lymph node dissection and of the number of nodes resected.
  
  
  METHODS
  The study sample consisted of 156 patients operated on for NSCLC and classified in stage IA according to TNM staging. Only palpable or visible lymph nodes were dissected. Kaplan-Meier survival curves were compared using a log-rank test.
  
  
  RESULTS
  At the end of the study, 85 (54.5%) patients had died, 67 (42.9%) were alive, and 4 (2.5%) were lost to follow up. Twenty-three (14.7%) died from a recurrence of NSCLC: 2 with local tumors (1.2%), 2 with mediastinal node involvement (1.2%), and 19 (12.1%) with distant metastasis. The cause of death was unrelated to NSCLC in 62 (39.7%) cases: 33 (21.1%) had a new tumor, 18 of which were bronchogenic, and 29 (18.5%) had nonmalignant disease. The 5-year survival rate was 81.4%. The rate was 88.9% among patients from whom no lymph nodes were excised and 79.9% among those with node excision, although the difference was not statistically significant (P=.4073).
  
  
  CONCLUSIONS
  Our experience suggests that neither the fact of not performing systematic lymph node dissection nor the number of nodes resected has an impact on survival. A substantial number of patients died of causes unrelated to the NSCLC for which they had been treated.
authors.affiliation: Servicio de Cirugía Torácica, Hospital Universitario La Fe, Valencia, España. jpadilla@comv.es
authors.forename: J
authors.initials: J
authors.lastname: Padilla
authors.forename: J C
authors.initials: JC
authors.lastname: Peñalver
authors.forename: C
authors.initials: C
authors.lastname: Jordá
authors.forename: V
authors.initials: V
authors.lastname: Calvo
authors.forename: J
authors.initials: J
authors.lastname: Escrivá
authors.forename: J
authors.initials: J
authors.lastname: Cerón
authors.forename: A
authors.initials: A
authors.lastname: García Zarza
authors.forename: J
authors.initials: J
authors.lastname: Pastor
authors.forename: E
authors.initials: E
authors.lastname: Blasco
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002283:Carcinoma, Bronchogenic / Q000401:mortality* / Q000473:pathology; D002289:Carcinoma, Non-Small-Cell Lung / Q000401:mortality* / Q000473:pathology; D002423:Cause of Death; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality* / Q000473:pathology; D008197:Lymph Node Excision; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D015996:Survival Rate