Background: Petroclival meningiomas (PCMs) are technically challenging lesions. Although the standard retrosigmoid approach is one of the most effective approaches, this route may have some limitations for the tumors extending into the supratentorial region and middle cranial fossa. We provide a modified surgical technique called retrosigmoid-transtentorial approach (RTTA) to solve these proble...

Facial nerve schwannomas involving posterior and middle fossas are quite rare. Here, we report an unusual case of cerebellopontine angle facial schwannoma that involved the middle cranial fossa, two years after the first operation. A 53-year-old woman presented with a 3-year history of a progressive left side hearing loss and 6-month history of a left facial spasm and palsy. Magnetic resonance ...

Liliequist's membrane is an important surgical landmark in various neurosurgical operations. The structure of the Liliequist’s membrane, as reported in the literature, varies considerably. Most of the anatomic studies of Liliequest’s membrane have been reported following removal of both the frontal lobes. This report presents the image of Liliequist’s membrane as viewed endoscopically from a re...