title: [Gastric carcinoma associated with other primary malignant neoplasms. A retrospective study of 25 cases].
abstract: BACKGROUND
  The risk of developing a second neoplasm in a person with gastric carcinoma (GC) is higher than among general population.
  
  
  OBJECTIVE
  To analyze the clinical findings in patients with GC associated with other primary malignant neoplasms.
  
  
  METHODS
  A total of 25 patients with GC associated with extragastric tumours were retrospectively studied. The following characteristics were studied: age, sex, location and staging, free interval, therapy, and survival. Survival of 13 patients with GC diagnosed as primary tumour was compared with that observed in a control group of 62 patients with GC alone.
  
  
  RESULTS
  Twenty-five out of 792 (3.1%) patients with GC had other primary malignant neoplasms (seven synchronous and 18 metachronous). GC was associated with respiratory tumours in 7 cases. Sixty percent of patients with GC who had a second neoplasm had it diagnosed within the first year after gastric tumour was diagnosed (8 out of 13). Survival at 18 months was similar, both in the GC group with a second tumour as in the control group.
  
  
  CONCLUSIONS
  The development of a second neoplasm among patients with GC usually occurs within the first year after diagnosis. Most commonly, the second neoplasm seats in the respiratory tract.
authors.affiliation: Servicio de Digestivo, Hospital Nuestra Señora de Aránzazu, San Sebastián.
authors.forename: A
authors.initials: A
authors.lastname: Cosme Jiménez
authors.forename: L
authors.initials: L
authors.lastname: Bujanda Fernández de Pierola
authors.forename: E
authors.initials: E
authors.lastname: Ojeda Pérez
authors.forename: I
authors.initials: I
authors.lastname: Gil Lasa
authors.forename: J
authors.initials: J
authors.lastname: Barrio Andrés
authors.forename: J
authors.initials: J
authors.lastname: Torrado Cadena
authors.forename: A
authors.initials: A
authors.lastname: Indart Pérez
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000401:mortality* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D009378:Neoplasms, Multiple Primary / Q000401:mortality* / Q000473:pathology; D016609:Neoplasms, Second Primary / Q000401:mortality* / Q000473:pathology; D012189:Retrospective Studies; D013030:Spain / Q000453:epidemiology; D013274:Stomach Neoplasms / Q000401:mortality* / Q000473:pathology; D016019:Survival Analysis