Unknown Case 20

46 y/o diabetic F presents with left breast palpable area of concern. What is the most likely diagnosis?


  • Primarily in insulin-dependent Type 1 diabetics (can be seen in Type 2)
  • Large, painless, hard mass
  • Form of lymphocytic mastitis and stromal fibrosis
  • Diagnosed on core biopsy
  • Self-limited; Surgery not recommended (increases recurrences)