A Case of Extramedullary Relapse of Acute Myeloid Leukemia in the Breast

Abstract

Extramedullary relapse of acute myeloid leukemia (AML) in the breast is relatively rare. Here, we report a case of extramedullary relapse of AML in the breast. The patient was a 39-year-old woman who was conscious of breast and subcutaneous tumors one and a quarter year after the remission of AML. Histopathological results confirmed the presence of extramedullary relapses of AML.

Ultrasonography revealed that these tumors were markedly different from other breast tumors that we encountered in daily practice. We considered that these tumors were a relapse of AML from her medical history.

Although tumor-forming AML is relatively rare, clinicians should be aware of the potential to form such tumors, particularly extramedullary AML, in order to provide an early diagnosis of AML.