Epidemiology


  • Most common benign lesion of the breast
  • Usually occurs in pre-menopausal women, likely hormone mediated

Etiology


Pathophysiology


Benign fibrosis and cyst tissue formation

Clinical features


  • Premenstrual bilateral multifocal breast pain (cyclic mastalgia)
  • Tender or nontender breast nodules
  • Clear or slightly milky nipple discharge

Subtypes and variants


  • Apocrine metaplasia
    • No risk
    • A-Okay
  • Sclerosing adenosis
    • Some risk
    • Sclerosing = Some
  • Atypical hyperplasia
    • Significant risk
    • Atypical likely to Aturn into cancer

Diagnostics


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Treatment