title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 20-1977.
mesh_terms: D000368:Aged; D000740:Anemia / Q000209:etiology; D001416:Back Pain / Q000209:etiology; D001796:Blood Protein Disorders / Q000209:etiology; D001853:Bone Marrow / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009101:Multiple Myeloma / Q000150:complications / Q000175:diagnosis / Q000473:pathology*