Unusual Wormian bones at Pterion – Three case reports

Wormian bones of the cranial vault are formations associated with insufficient rate of suture closure, and regarded as epigenetic and hypostotic traits. These bones rest along sutures and/or fill fontanelles of the neonatal skull. These cases displays the possibility of discrete diversification of the ossification centers, as well as the relative stability of the structural skull matrix in response to discrete changes. The existence of wormian bones in the skull is well known. We report three cases of unusual wormian bones at the pterion and all were unilateral. Knowledge of these variations is very important for anthropologists, radiologists, orthopaedic andneuro-surgens.