New left lower back/flank subcutaneous nodule; please evaluate; history of spindle cell (monophasic) synovial sarcoma of left distal forearm. There is no discernible tumor in the soft tissues in the region of the skin markers. There is also no evidence of tumor within the lumbar spine. There is lumbarization of S1. The vertebral column alignment is within normal limits. The vertebral body heights are preserved. The vertebral bone marrow signal is unremarkable. There is a small eccentric left disc protrusion with mild left lateral recess spinal canal stenosis at L5-S1, but no significant narrowing of the neural foramina. There is no significant spinal canal or neural foramen stenosis of the other lumbar spine levels. The lower spinal cord displays normal signal and morphology. The paravertebral soft tissues are unremarkable.
1. No discernible tumor in the region of the left lower back skin markers. 2. Small eccentric left disc protrusion with mild left lateral recess spinal canal stenosis at L5-S1.