الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
To highlight on the field of skull base surgery , relation of otolaryngolgist surgeons in it , recent surgical precedures applied in the this field and recent ways of treatment discovered in it.
We discuss anatomy of The skull base forms the floor of the cranial cavity and separates the brain from other facial structures. This anatomic region is complex and posses surgical challenges for otolaryngologists and neurosurgeons alike. The skull base can be subdivided into 3 regions: the anterior, middle, and posterior cranial fossae. Classification of skull base tumors into benign&malignant. Benign tumors of the skull base include true neoplasms, inflammatory masses, cysts, and developmental anomalies occurring at the osseous interface between the brain and the underlying structures of the head and neck. Malignant neoplasms of the skull base divide the lesions into those that involve the anterior skull base, the clivus, or the lateral skull base.
The clinical presentation of skull base tumors varies greatly and relates directly to the location of the lesion and the growth rate.
Management of complex skull base surgical procedures provides unique problems. Postoperative morbidity may be affected by surgical approach produce a greater incidence of pain, nausea, and vomiting in the postoperative period.
Skull base surgery is very complex, and the risk of complications is relatively high. The most significant life-threatening event is massive intracranial hemorrhage that occurs because of intraoperative or early in the postoperative period.