title: [The epidemiology of Cancer among adolescents].
abstract: OBJECTIVE
  To review the international literature on adolescent cancer epidemiology.
  
  
  METHODS
  The Medline database was searched to obtain all papers on adolescent cancer epidemiology published during a period of 15 years (1985-1999). Time, place, and person variables were analyzed, as well as their relationships.
  
  
  RESULTS
  Few papers on adolescent cancer epidemiology were found, likely due to the difficulty in registering cancer cases in the 12 to 18 year-old group. Either the 10-14 or the 15-19 year-old group has been analyzed in different studies; but the latter is more representative of teenagers. A higher incidence rate was found in this group (117.3 and 202.2 x 10(6) respectively). The main malignancies in the 15-19 year-old group were central nervous system tumors (CNST), leukemias, lymphomas, bone tumors, germ-cell tumors, and carcinomas. Incidence rates were higher in males and whites; an increasing trend was observed. Cancer mortality in this group is decreasing in the United States (2.0 or 3.2% per year). Survival is increasing in all groups of neoplasms. No data were available on cancer incidence in the 15-19 year-old group in Mexico: data were available only for the 10-14 year-old group. The main neoplasms are leukemias, lymphomas, bone tumors, and CNST (rates were 41.9, 29.9, 12.0, and 10.0 x 10(6), respectively). The mortality rate for the 1990-1994 period was 64.1 and the main neoplasms were leukemias, CNST, and lymphomas.
  
  
  CONCLUSIONS
  More studies are needed to address the descriptive epidemiology of cancer in teenagers.
authors.affiliation: Unidad de Investigación Médica en Epidemiología Clínica, Hospital de Pediatria, Centro Médico Nacional Siglo XXI, IMSS. Av. Cuauhtémoc 330, colonia Doctores, 06720 México, D.F., México.
authors.forename: María Luisa
authors.initials: ML
authors.lastname: Cuevas-Urióstegui
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Villasís-Keever
authors.forename: Arturo
authors.initials: A
authors.lastname: Fajardo-Gutiérrez
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D016021:Epidemiologic Studies; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D009369:Neoplasms / Q000453:epidemiology*; D012307:Risk Factors; D017678:Sex Distribution; D016019:Survival Analysis; D015996:Survival Rate