ARRS 2022 Abstracts

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E1252. GM: Granulomatous Mastitis - The Great Mimicker
Authors
  1. Ahsan Khan; Santa Clara Valley Medial Center
  2. Ran Pang; Santa Clara Valley Medial Center
  3. Kei Hanafusa; Santa Clara Valley Medial Center
  4. Long Trinh; Santa Clara Valley Medial Center
  5. Edwina Chang; Santa Clara Valley Medial Center
Background
Granulomatous mastitis is a rare and benign chronic inflammatory disease which may present in many forms. Often, its elusive appearance may mimic other pathologies which can result in unnecessary intervention. Therefore, it’s critical for providers to be aware of the typical features and risk factors for granulomatous mastitis, as well as a framework for how to best approach workup for suspected cases.

Educational Goals / Teaching Points
This exhibit will aim to outline the clinical presentation and patient demographics of biopsy-proven granulomatous mastitis; review imaging characteristics in a series of cases of granulomatous mastitis; discuss pitfalls and potential mimics; and outline a multidisciplinary approach to diagnosis and treatment.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Key issues include background and proposed pathophysiology of granulomatous mastitis; patient demographics and risk factors; case-based review of biopsy-proven granulomatous mastitis on mammography, ultrasound, and MRI; pathologies which granulomatous mastitis may mimic; and biopsy considerations with multidisciplinary diagnostic/treatment approach.

Conclusion
Providers must be wary of potential pitfalls in cases of suspected granulomatous mastitis. Clinical history and patient risk factors play a key role in evaluating such cases. Diagnosis and treatment of granulomatous mastitis often requires a multidisciplinary approach with colleagues in pathology, infectious disease, and general surgery.