Female, 44 years old. Hx of cervical cancer, with subacute right lower extremity weakness and radiculopathy. Five lumbar type vertebral bodies are presumed to be present. The lumbar spine is in normal alignment, with a normal lumbar lordosis. The vertebral body and disk heights are well-maintained. Within the limits of noncontrast imaging, no suspicious lesions are identified within the lumbar spine. The conus medullaris on sagittal imaging is grossly intact. There are minimal degenerative changes of the lumbar spine, including mild disc bulge at L1-2, with no significant compromise to the spinal canal or neuroforamina.An expansile infiltrative mass centered on the right iliac bone is partially visualized with mild extension into the lateral sacrum and iliacus muscle. There is presumed involvement of the peripheral lumbosacral plexus/nerves to explain the patient's symptoms but is not assessed on this lumbar spine study. This mass appears new from prior CT imaging dated 10/2015. No other mass lesions are identified. Diffuse T1 hyperintensity in the pelvis may be related to prior radiation therapy. Atrophic right kidney.
1.Expansile mass centered on the right iliac bone is partially visualized and highly suspicious for osseous metastasis. Contrast-enhanced MR imaging of the pelvis may be obtained to assess for the full extent of this lesion. There may be involvement of the peripheral lumbosacral plexus/nerves to explain the patient's symptoms but is not assessed on this lumbar spine study. 2.No suspicious lesions identified within the lumbar spine. No compromise of lumbar spinal canal or neuroforamina.