Epidemiology

Etiology

• Often associated with soft tissue trauma

Pathophysiology

Dead fat tissues replaced by scar tissues

Clinical features

Diagnostics

• Mammography
  • Fluid-filled oil cyst
  • Coarse rim calcifications
• Image-guided biopsy
  • Foam cells and multinucleated giant cells
  • Necrotic fat cells
  • Hemosiderin deposition and chronic inflammation

Treatment