ABSTRACT
Primary breast lymphoma (PBL) is a rare form of extranodal lymphoma
defined by the presence of a primary lesion within the breast with or
without regional nodal involvement, but no other extra-mammary sites of
involvement. Bilateral PBL is even more rare with very few cases
reported in the literature. Herein, we report a case of PBL, who after
27 years, developed PBL of the contralateral breast. In this review we
will describe incidence, clinical presentation, histological subtypes,
treatment, outcomes, and etiologies for PBL.