Lymphocytic mastitis

Last revised by Dr Henry Knipe on 19 Mar 2018

Lymphocytic mastitis, also known as lymphocytic mastopathy or sclerosing lymphocytic lobulitis, is a rare benign inflammatory disease of the breast that can mimic breast cancer.

Diabetic mastopathy is a closely-related entity although it is sometimes used synonymously in the literature.  

Lymphocytic mastitis may present as a palpable mass, which may be painful and may be bilateral. 

Lymphocytic mastitis is associated with autoimmune disease (e.g. Hashimoto thyroiditis, systemic lupus erythematosus, Sjogren syndrome) 1

Dense fibrous tissue with hard lesions, that can be large (up to 6 cm) 4

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Cases and figures

  • Case 1: mammography
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  • Case 1: ultrasound
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