Summary

Primary breast lymphoma is a rare subtype of breast malignancy whose diagnosis relies on histopathological characteristics and a high index of suspicion in clinically unusual presentations of breast pathology. The authors report a rare case of diffuse primary large B cell lymphoma of leg type presenting as a single lesion confined to the breast. Unusually for this subtype of lymphoma, the lesion was surgically excised and the patient, to date, has made an uneventful recovery.