Metastatic bone involvement of the hallux distal phalanx and cuboid in an elderly patient with non-Hodgkin lymphoma.

Non-Hodgkin lymphoma metastasis to bone is a rare occurrence in the lower extremity. There have been very few reported cases. Bone metastasis, when it occurs, usually affects the axial skeleton. This article presents a case of Waldenström macroglobulinemia, a variant of non-Hodgkin lymphoma, with metastasis to the right hallux distal phalanx and left cuboid, as well as cutaneous lesions of the right foot. The patient received radiation treatments to each involved area with complete resolution of symptoms and tumor.