Proliferative (Borderline) Endometrioid Adenofibroma


D efinition Noninvasive epithelial and stromal tumors with an atypical endometrioid epithelial component.

Clinical Features

Epidemiology

  • Uncommon but not exceedingly rare; less than 200 reported cases but most pathologists will encounter at some point in their practice.

  • Similar to other endometrioid tumors, patients are typically at the end of their reproductive period or postmenopausal.

  • The average age at diagnosis is in the mid-50s.

  • At least one fourth of cases are associated with endometriosis.

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