Dr. Felipe Slaviero – Edifício das Clínicas Rua Teixeira Soares, 885 / 10o andar 99010-901 Passo Fundo RS Brasil. E-mail: [email protected]. Intracranial arachnoid cysts are congenital collections of fluid that develop within the arachnoid membrane because of splitting or duplication of this structure. It corresponds to 1% of all non-traumatic intracranial mass lesions. Arachnoid cysts...

The infratemporal fossa is a deep quadrangular space located at the inferior aspect of the middle cranial fossa. Numerous surgical approaches have been described to gain access to benign and malignant pathology of this anatomical area. The transzygomatic transmandibular approach provides excellent wide exposure of the infratemporal space, for resection of tumours afflicting this region.

Dandy-Walker malformation (DWM) is a congenital abnormality of the posterior cranial fossa with reported incidence of 1:25,000 to 1:35,000 live births [1,2]. The classic clinical trials of the DWM are absence of cerebellar vermis, cystic dilatation of the fourth ventricle, and the enlargement of posterior cranial fossa [3]. In approximately 80% of diagnosed DWM cases, the syndrome is accompanie...

A 26-year-old-man presented with intermittent headache for the last two years. The patient had no other medical history such as infection, subarachnoid hemorrhage, trauma or malignancies affecting central nervous system. A cranial CT and MR were performed. Cranial imaging revealed multiple arachnoid cysts located in right temporal fossa (Galassi type 2), left temporal fossa extending to the con...

A retrospective review was performed of patients treated for middle ear cholesteatoma with bone defects of the skull base via a combined transmastoid/middle fossa approach at the University of Tsukuba Hospital from 2006 through 2011 to determine the safety and effectiveness of a combined transmastoid/middle fossa approach for the treatment of cholesteatoma involving the middle cranial fossa. Th...

A case of an intratemporal lobe and middle cranial fossa neurinoma of the facial nerve is presented. Complete excision of the tumour was carried out.