Bilateral eosinophilic mastitis: an uncommon unheard entity

Area of Science:

• Oncology
• Pathology
• Immunology

Background:

• Eosinophilic mastitis is an uncommon inflammatory breast condition.
• It can clinically and radiologically mimic breast carcinoma.
• Bilateral presentation is exceptionally rare.

Observation:

• A 30-year-old female presented with bilateral breast lumps.
• She had a history of intermittent rhinitis and peripheral eosinophilia.
• Mammography suggested malignancy, but ultrasound indicated mastitis.

Findings:

• Aspiration cytology revealed an inflammatory lesion with significant eosinophil presence.
• Histopathology confirmed the diagnosis of eosinophilic mastitis.
• This case highlights eosinophilic infiltration of the breast as a rare manifestation of peripheral eosinophilia.

Implications:

• Accurate diagnosis is crucial to differentiate from breast cancer.
• Further research into the pathogenesis of eosinophilic mastitis is warranted.
• This rare condition underscores the importance of considering diverse differential diagnoses in breast pathology.