title: Primary testicular seminoma: prognostic significance of nuclear DNA ploidy pattern.
abstract: OBJECTIVE
  To evaluate the impact of nuclear DNA content on outcome of patients with testicular seminoma.
  
  
  METHODS
  Formalin-fixed paraffin-embedded blocks taken from 111 patients with primary testicular seminoma were studied by flow cytometry for nuclear DNA content. The results of ploidy status were correlated with histopathologic features, tumor progression and patients' survival.
  
  
  RESULTS
  48% of the tumors were DNA diploid and 52% were DNA aneuploid. None of the patients with DNA diploid seminoma had an advanced stage seminoma at the time of diagnosis. Progression after therapy or cancer-related death occurred only in patients who had DNA aneuploid testicular tumors.
  
  
  CONCLUSIONS
  Nuclear DNA ploidy pattern provides important prognostic information for patients with testicular seminoma.
authors.affiliation: Department of Urology, Mayo Clinic, Rochester, Minn., USA.
authors.forename: O
authors.initials: O
authors.lastname: Nativ
authors.forename: H Z
authors.initials: HZ
authors.lastname: Winkler
authors.forename: H R
authors.initials: HR
authors.lastname: Reiman
authors.forename: J D
authors.initials: JD
authors.lastname: Earle
authors.forename: M M
authors.initials: MM
authors.lastname: Lieber
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002467:Cell Nucleus / Q000378:metabolism; D016009:Chi-Square Distribution; D004273:DNA, Neoplasm / Q000032:analysis* / Q000235:genetics; D018450:Disease Progression; D005434:Flow Cytometry; D005500:Follow-Up Studies; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D016612:Paraffin Embedding; D011003:Ploidies; D011379:Prognosis; D012189:Retrospective Studies; D018239:Seminoma / Q000175:diagnosis / Q000235:genetics* / Q000401:mortality / Q000473:pathology; D013736:Testicular Neoplasms / Q000175:diagnosis / Q000235:genetics* / Q000401:mortality / Q000473:pathology; D014021:Tissue Preservation
chemical_list: D004273:DNA, Neoplasm