History of pilonidal cyst and perianal abscess: back pain, sacroiliac Crohn's disease. The vertebral column alignment is within normal limits. There are small facet joint effusions at L4-5, with an inferiorly directed left synovial cyst. The vertebral body and disc space heights are preserved, aside from small intravertebral disc herniations in the inferior L1 and T12 endplates. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The spinal cord and cauda equina nerve roots display normal signal and morphology. The paravertebral soft tissues are unremarkable. There is a tiny right renal cyst. There is a small amount of fluid within the pelvis, which is likely physiological.
1. Degenerative facet joint arthropathy with a small left synovial cyst at L4-5.2. No evidence of pilonidal cyst in the imaged lower back.