Preschooler with short stature Pediatric Imaging Musculoskeletal April 20, 2022March 30, 2022 AP and lateral radiographs of the skull (above) and axial CT without contrast of the brain (below) shows diffusely sclerotic skull bones with a thickened diploic space and diastatis of the coronal and lambdoid and sagittal sutures. The diagnosis was pyknodysostosis. Related Published April 20, 2022March 30, 2022