Transpetrosal extreme lateral suboccipital approach for extensive posterior fossa epidermoid cyst--case report.

A new transpetrosal extreme lateral suboccipital approach was adopted to totally remove an extensive posterior fossa epidermoid cyst in a 36-year-old male. The pathological behavior of intracranial epidermoid cysts may impose surgical problems during removal of the tumor. However, planning based on neuroimaging allows optimum access to tumors and microsurgery achieves safer and more complete removal.