Soft tissue mass right lower back, etiology unclear. Concern for increase in size and change in texture. ? Desmoid tumor. Please evaluate. Five lumbar type vertebral bodies are presumed to be present. Vertebral body heights are within normal limits. Alignment is within normal limits. Bone marrow signal is benign. T1 hyperintense lesion involving the L2 vertebral body is consistent with a small hemangioma. The conus medullaris is normal in position.There is mild generalized facet arthropathy throughout the lumbar spine. Additional details regarding degenerative changes as described below:L1-L2: No significant disc disease. No spinal canal or neural foraminal stenosis.L2-L3: No significant disc disease. No spinal canal or neural foraminal stenosis.L3-L4: No significant disc disease. No spinal canal or neural foraminal stenosis.L4-L5: Minimal disc bulge. No significant spinal canal or neural foraminal stenosis. L5-S1: There is a central/right paracentral disc protrusion which partially effaces the lateral recesses, particularly on the right where there is contact of the right S1 nerve root. No significant central spinal canal stenosis. There is mild bilateral neural foraminal stenosis.In the right upper lumbar superficial musculature at the L1-L2 level, there is a lesion measuring 1.1 x 3.7 cm in the AP and transverse dimensions and approximately 3.5 cm in the craniocaudal dimension with signal features consistent with fat and no suspicious enhancement. Paraspinous soft tissues are otherwise unremarkable.
1. Superficial soft tissue lesion in the right upper lumbar region is consistent with a lipoma.2. Mild degenerative changes at the L5-S1 level with disc protrusion, as described above. 