Preschooler with short stature Pediatric Imaging Musculoskeletal April 3, 2022March 30, 2022 AP radiograph of the upper extremity shows proximal (rhizomelic) shortening of the humerus along with flaring of the distal metaphysis of the radius and ulna. The diagnosis was achondroplasia. Related Published April 3, 2022March 30, 2022