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Related Experiment Videos

Clonal karyotypic abnormalities in gynecomastia.

D A Cornélio1, A T Schmid-Braz, L R Cavalli

  • 1Departamento de Genética do Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Paraná, Brazil.

Cancer Genetics and Cytogenetics
|December 22, 1999
PubMed
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Gynecomastia, a benign male breast condition, shows specific chromosomal abnormalities. These genetic changes, including deletions and monosomies, are nonrandom and observed in non-cancerous tissue.

Area of Science:

  • Cytogenetics
  • Oncology
  • Pathology

Background:

  • Gynecomastia is a common benign condition of the male breast gland.
  • Cytogenetic data on gynecomastia are notably limited in existing literature.
  • Previous reports with abnormal karyotypes in gynecomastia were associated with breast carcinoma.

Observation:

  • This study investigated chromosomal alterations in a gynecomastia sample.
  • The sample exhibited no signs of adjacent malignant tissue.
  • Clonal chromosomal abnormalities were identified.

Findings:

  • Observed nonrandom abnormalities included a deletion of 12p.
  • Monosomies of chromosomes 9, 17, 19, and 20 were detected.
  • A marker chromosome was present in the gynecomastia cells.

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Implications:

  • These findings suggest that specific chromosomal alterations are nonrandom in gynecomastia.
  • The identified abnormalities have been previously noted in various benign and malignant breast lesions.
  • This recurrence indicates a potential role for these genetic changes in mammary gland abnormalities.