Parietal skull extramedullary relapse in multiple myeloma

A 59-year-old man was diagnosed with kappa light chain multiple myeloma (MM), CS IIIA (DS), I (ISS), carrying del(17 p), 80% of plasma cell bone marrow infiltration and lytic bone lesions of the skull, left humerus and ileum, and lumbar vertebral column. He was treated with bortezomib, cyclophosphamide and dexamethasone with …