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

Treatment