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Widening of the costochondral junctions (rosary beads appearance).
Pigeon chest deformity (the weak ribs are pulled inwards by the respiratory muscles with anterior protrusion of the sternum) giving a triangular chest appearance on cross section
Normal CT scan of both lungs.
Widening, cupping and fraying of the proximal humeral metaphsysis.
Lateral bowing of proximal ulnar shafts on both sides.