Intracranial cholesteatoma

Intracranial cholesteatoma is a slow-growing congenital tumor, commonly found in the cerebellopontine angle and sellar region, but also seen in the lateral ventricles, cerebrum, and cerebellum. It often grows slowly along the subarachnoid spaces and fissures of the brain at the skull base. There are no characteristic clinical symptoms. When the tumor grows large, it can cause symptoms such as hydrocephalus and aseptic meningitis. It can occur at any age, with a peak incidence around 40 years old.