Teenager with sickle cell disease and respiratory distress Pediatric Imaging Musculoskeletal April 25, 2023February 14, 2023 CXR AP (left) shows opacity in the left lower lobe that on the lateral (middle) is located posteriorly (spine sign). The vertebral bodies (right) have an H-shaped appearance throughout the thoracic and lumbar spine. The diagnosis was acute chest syndrome and musculoskeletal manifestations of sickle cell disease. Related Published April 25, 2023February 14, 2023