Type:
Educational Exhibit
Keywords:
Venous access, MR, Neuroradiology brain, Neuro, Education and training, Not applicable
Authors:
E. BRUNO1, G. Lo Meo2, G. Caruana1, F. Bencivinni1, T. V. Bartolotta1; 1Palermo/IT, 2Bagheria/IT
DOI:
10.26044/ecr2020/C-09810
Background
The cerebellopontine angle cistern is a triangular cerebrospinal fluid (CSF)-filled subarachnoid space bound by the pons, cerebellum and petrous temporale bone.
CPA masses represent 5-10% of all intracranial masses [1]; they are usually benign and divided into extra-axial and intra-axial tumors.
The principal subtypes are extra-axial tumors, like vestibular schwannomas (70-80%), meningiomas (5-12%) and epidermoid cysts (2-6%) [1] .
The other extra-axial lesions include arachnoid cysts, lipoma, aneurysm, etc.
Intra-axial tumors of CPAs are medulloblastoma, ependymoma and metastasis.
Clinical presentation of the CPA tumors is variable and it depends upon the size and location of the tumor. It can be asymptomatic in early stage or it can give vertigo, tinnitus, or hearing loss [4].
Magnetic resonance imaging (MRI) is the primary modality for diffential diagnosis of the different types of CPA masses.