X-ray may be helpful in the diagnosis of  multiple myeloma. Findings on X-ray suggestive of multiple myeloma include punched out bony lesions, generalized osteopenia,  and hair-on-end appearance. In some cases, MRI may be needed if X-ray is insufficient for diagnosis.
Multiple myeloma x ray
Multiple myeloma CT
Multiple myeloma MRI
Monoclonal gammopathy of undetermined significance physical examination
POEMS syndrome MRI
Monoclonal gammopathy of undetermined significance ultrasound
Osteosarcoma x ray
Monoclonal gammopathy of undetermined significance laboratory findings