title: Male genital cancers.
abstract: BACKGROUND
  The estimated 165,000 cancers of the male genital system that will occur in the United States during 1993 represent one fourth of the expected 600,000 newly diagnosed cancers in American males for the year.
  
  
  METHODS
  Data were collected by the Surveillance, Epidemiology, and End Results (SEER) program. This paper examines histologic data collected by the SEER program from 1973-1987 and focuses on incidence, stage at diagnosis, and survival for the dominant histologic types of cancer that occur in the four major topographic divisions of the male genital system: prostate gland, testis, penis, and scrotum. Some less common histologic types within each organ are also discussed.
  
  
  RESULTS
  The incidence of male genital cancer has increased rapidly over the period of study. Cancers of the prostate, most of which are adenocarcinomas, represent more than 92% of all male genital cancers. Among adolescents and young men, germ cell cancers of the testis predominate, but decline rapidly in occurrence after 40 years of age. Blacks had higher incidence rates for prostate cancer than whites; however, the situation was reversed for testicular cancer. Survival increased dramatically for testicular cancer. Cancers of the penis and scrotum of any histologic type are uncommon in the United States.
  
  
  CONCLUSIONS
  The increased incidence of prostate adenocarcinomas and testis germ cell tumors indicates the need for further etiologic studies as a basis for prevention efforts.
authors.affiliation: Department of Medicine, New Mexico Tumor Registry, University of New Mexico School of Medicine, Albuquerque 87131.
authors.forename: F D
authors.initials: FD
authors.lastname: Gilliland
authors.forename: C R
authors.initials: CR
authors.lastname: Key
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005834:Genital Neoplasms, Male / Q000145:classification / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D044469:Racial Groups; D018426:SEER Program; D014481:United States / Q000453:epidemiology