Objectives: Acute lymphoblastic leukemia (ALL) makes up a family of lymphoid neoplasms derived from B and T cell lymphoid populations. ALL presenting as a solid breast mass is extremely rare and recurrent breast leukemia is more common in acute myeloid leukemia. We describe a case of a 26 year old male with metastatic ALL to the breast presenting as a single solitary mass. We conclude that while there is no current role for surgical management, breast pathology often presents initially as a surgical consultation and therefore surgeons need to be aware of ALL as a part of the differential diagnosis of breast masses.
