What is cerebellopontine angle lesion?

The cerebellopontine angle syndrome is a distinct neurological syndrome of deficits that can arise due to the closeness of the cerebellopontine angle to specific cranial nerves. Indications include unilateral hearing loss (85%), speech impediments, disequilibrium, tremors or other loss of motor control.

Where is the cerebellopontine angle cistern?

The cerebellopontine angle (CPA) cistern, also known as the pontocerebellar cistern, is a triangular CSF-filled subarachnoid cistern that lies between the anterior surface of the cerebellum and the lateral surface of the pons.

What is cerebellopontine angle meningioma?

Introduction. Cerebellopontine angle meningiomas account for 6–15% of the tumors in the cerebellopontine angle region (1). They are characterized by the deep tumor location, narrow surgical field, and proximity to the brainstem, multiple pairs of (V–XI) cranial nerves (2).

What are cerebellopontine angle tumors?

Cerebellopontine angle (CPA) tumors are the most common neoplasms in the posterior fossa, accounting for 5-10% of intracranial tumors. Most CPA tumors are benign, with over 85% being vestibular schwannomas (acoustic neuromas), lipomas, vascular malformations, and hemangiomas.

What does the cerebellopontine angle do?

The cerebellopontine angle is formed by the cerebellopontine fissure. This fissure is made when the cerebellum folds over to the pons, creating a sharply defined angle between them. The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern.

Is an acoustic neuroma a brain tumor?

An acoustic neuroma is a type of non-cancerous (benign) brain tumour. It’s also known as a vestibular schwannoma. A benign brain tumour is a growth in the brain that usually grows slowly over many years and does not spread to other parts of the body.

What does Cerebellopontine mean?

Listen to pronunciation. (SAYR-eh-BEH-loh-PON-teen) Having to do with two structures of the brain, the cerebellum (located at the lower back of the brain) and the pons (located at the base of the brain in front of the cerebellum) and the area between them.