Teenager with lower back pain for 8 months Pediatric Imaging Musculoskeletal February 12, 2023December 14, 2022 Lateral radiograph of the lumbar spine shows bilateral pars defects at L5 and Grade I anterolisthesis of L5 on S1. The diagnosis was spondylolisthesis. Related Published February 12, 2023December 14, 2022