Developmental variations in the cranial vault arise during early ontogenesis due to premature or delayed suture closure, non-union between normal ossification centers, and emergence of additional centers. These cause abnormal calvarial partition are often associated with modifications overall configuration. This study aims evaluate impact metopic persistence development supernumerary bones occi...

The squamous occipital bone consists of two parts: a cartilaginous supraoccipital part below and a membranous interparietal (IP) part above the highest nuchal line. The IP part develops from two pairs of ossification centres which form the two lateral plates and a median central piece. Any anomalous ossification of these centres gives rise to IP bones. Occasional separate ossified part of the I...

Materials and Methods: All patients with en plaque meningioma in spheno-orbital area, who were subject to this experiment in the Neurosurgery Clinic of Shahid Rajai Hospital (affiliated to Qazvin University of Medical Sciences, Qazvin, Iran), were operated for tumor resection. Gamma knife was used to resect the tumor tissue in patients who underwent subtotal surgery resection. Patients were fol...