Low back painIMAGE ACQUISITIONS: Lumbar spine CT without contrast Lumbar spinal alignment is normal. Vertebral body heights are intact. Intravertebral disk spaces are normal.T12-L1: No neuroforamina or central canal stenosis.L1-2: No neuroforamina or central canal stenosis.L2-3: There neuroforamina worse central canal stenosis.L3-4: Diffuse disk bulge without central canal stenosis. No neuroforamina stenosis.L4-5: Diffuse disk bulge without central canal stenosis. Questionable right lateral disk protrusion. Neural foraminal narrowing bilaterally.L5-1: Diffuse disk bulge without central canal or neuroforamina stenosis.In the sacrum, there is a large low attenuation lesion with extension into the retroperitoneum. This is a biopsy-proven schwannoma. We would prefer MRI with contrast to further evaluate this lesion if clinically warranted.
1. Degenerative disease as described above2. Sacrum schwannoma