Primary lymphomas of the breast are rare and predominately of B-cell phenotype. Lymphomas involving the breast account for approximately 2% of extranodal lymphomas and <1% of all non-Hodgkin lymphomas.
Most frequent types
diffuse large B-cell lymphoma (DLBCL) (64%)
follicular lymphoma
mucosa-associated lymphoid tissue lymphomas (MALT lymphomas)
classical Hodgkin lymphoma
References
Talwalkar SS, Miranda RN, Valbuena JR, Routbort MJ, Martin AW, Medeiros LJ. Lymphomas Involving the Breast: A Study of 106 Cases Comparing Localized and Disseminated Neoplasms. Am J Surg Pathol. 2008 Jul 16. PMID: 18636016