Cerebellopontine angle cyst

The cerebellopontine angle CPA is a rare location for arachnoid cysts, and fewer than 35 cases of arachnoid cysts occurring in the CPA have been reported in the literature. We discuss the diagnosis, radiographic imaging, and management of CPA arachnoid cysts, cerebellopontine angle cyst. Arachnoid cysts often present with only subtle signs or symptoms, such as cerebellopontine angle cyst or ataxia. Our case involves a middle-aged, female patient, who presented with unilateral tinnitus, unsteadiness, and headaches associated with nausea and vomiting.

Objective: The optimal surgical management of arachnoid cysts remains controversial. The cerebellopontine angle CPA is a rare location for arachnoid cysts, and only 28 cases of arachnoid cysts occurring in the CPA have been reported in the literature. We discuss the diagnosis, radiographic imaging, and surgical management of CPA arachnoid cysts. Methods: Five patients three male and two female patients with a mean age of 5. Magnetic resonance imaging allows for the accurate diagnosis of these arachnoid cysts, which can present with only discrete symptoms, such as headache or ataxia. All five arachnoid cysts compressed the cerebellum or brain stem. One patient had associated hydrocephalus.

Cerebellopontine angle cyst

At the time the article was last revised Ashesh Ishwarlal Ranchod had no financial relationships to ineligible companies to disclose. C erebellopontine angle CPA masses are relatively common. Although a diverse range of pathologies may be seen in this region, the most common by far is vestibular schwannoma. Cerebellopontine angle masses can be divided into four groups, based on imaging characteristics:. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. Updating… Please wait. Unable to process the form. Check for errors and try again. Thank you for updating your details. Recent Edits. Log In. Sign Up. Become a Gold Supporter and see no third-party ads. Log in Sign up.

Case 5: epidermoid Case 5: epidermoid.

A CSF density lesion in the right cerebellopontine angle, with moderate local mass effect with mild displacement of the brainstem but no effacement of the fourth ventricle. No widening of the adjacent porus acousticus. Remodeling of the adjacent bone is, however, present. Conclusion: Right cerebellopontine angle cystic lesion most likely represents an incidental arachnoid cyst with a differential diagnosis that includes epidermoid cyst or cystic acoustic neuroma the latter two are thought less likely. As demonstrated on the preceding CT scan, within the right cerebellopontine angle is a well-circumscribed CSF intensity lesion with bony remodeling of the petrous apex and indentation of the middle cerebellar peduncle.

Federal government websites often end in. The site is secure. Arachnoid cysts are non-neoplastic, intracranial cerebrospinal fluid CSF -filled spaces lined with arachnoid membranes. Large arachnoid cysts are often symptomatic because they compress surrounding structures; therefore, they must be treated surgically. As several surgical management options exist, we explore the best approach according to each major type of arachnoid cyst: middle cranial fossa cyst, suprasellar cyst, intrahemispheric cyst, and quadrigeminal cyst. Arachnoid cysts can be classified as primary developmental cysts or secondary cysts. Primary cysts arise from the splitting of the arachnoid membranes in utero, resulting in the development of anomalous collections of cerebrospinal fluid CSF.

Cerebellopontine angle cyst

At the time the article was last revised Ashesh Ishwarlal Ranchod had no financial relationships to ineligible companies to disclose. C erebellopontine angle CPA masses are relatively common. Although a diverse range of pathologies may be seen in this region, the most common by far is vestibular schwannoma. Cerebellopontine angle masses can be divided into four groups, based on imaging characteristics:.

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J Neuropathol Exp Neurol. ANZ J Surg. Coronal T2-weighted magnetic resonance imaging scan showing the arachnoid cyst with the compression of the brain stem. Figure 1. Ultrastructure and pathogenesis of intracranial arachnoid cysts. Unusual lesions of the cerebellopontine angle: a segmental approach. Arachnoid cyst - cerebellopontine angle Case contributed by Frank Gaillard. It was causing compression of right cerebellar hemisphere and brain stem. All five arachnoid cysts compressed the cerebellum or brain stem. Case 5: epidermoid Case 5: epidermoid. Publication types Review.

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He was born of nonconsanguineous parents as a preterm infant at 36 th weeks of gestation. Pediatr Neurosurg. We report a patient with CPA arachnoid cyst presenting with cranial nerve palsies and mirror movements caused by the compression of the brain stem. Copy Download. Case 2: acoustic schwannoma Case 2: acoustic schwannoma. Conclusion: Although CPA arachnoid cysts represent a small number of total arachnoid cysts, the CPA is the second most common location for arachnoid cysts to occur. Edit article. From the case: Arachnoid cyst - cerebellopontine angle. Unable to process the form. There was limited abduction on the right eye. Patient Data Age: 30 years. Contact Us.