Simple numerical chromosome aberrations in two pituitary adenomas

C U Dietrich, N Pandis, P Bjerre, H D Schrøder, S Heim

Research output: Contribution to journalJournal articleResearchpeer-review


Cytogenetic analysis of short-term cultures of one non-secreting and one prolactin-producing pituitary adenoma revealed simple clonal numerical abnormalities in both tumors. The karyotype of the non-secreting adenoma was 48,XX, +4, +9[42]/49,XX, +4, +9, +20[2]/46,XX[6]. In the prolactin-secreting adenoma, three aberrant clones were detected, giving the karyotype 45,X, -Y[20]/47,XY, +Y[6]/45,XY, -21[3]/46,XY[21]. One cell had the chromosome complement 46,X, -Y, +9; no other nonclonal aberrations were detected. The only hitherto published case of pituitary adenoma analyzed by banding techniques (Rey et al. [1986]: Cancer Genet Cytogenet 23:171-174) also had only numerical clonal changes that included extra copies of chromosome 9. We conclude that pituitary adenomas may be karyotypically characterized by numerical aberrations and that trisomy 9 seems to be the best candidate for a primary chromosomal anomaly.

Original languageEnglish
JournalCancer genetics and cytogenetics
Issue number2
Pages (from-to)118-21
Number of pages4
Publication statusPublished - Sep 1993


  • Adenoma
  • Adult
  • Aged
  • Chromosome Aberrations
  • Chromosome Banding
  • Chromosomes, Human, Pair 4
  • Chromosomes, Human, Pair 9
  • Female
  • Humans
  • Karyotyping
  • Male
  • Pituitary Neoplasms
  • Prolactinoma
  • Trisomy
  • Y Chromosome
  • Case Reports
  • Journal Article
  • Research Support, Non-U.S. Gov't


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