Choroid plexus papillomas are rare tumors, representing less than 1% of all intracranial neoplasms in our review of the English literature. Derived from the neuroepithelial cells of the choroid plexus, these tumors recapitulate the structure of the normal choroid plexus, often demonstrating a well-developed papillary architecture. This tumor most commonly affects children and typically arises i...

The delayed development of brain abscess associated with a retained intracranial foreign body is not rare and has been documented [1-5] . We report an unusual case of chronic granulomatous abscess in the cerebellopontine angle region secondary to retention of a cotton ball during surgery for an acoustic neurinoma 20 years earlier. We describe the computed tomographic (CT) findings and emphasize...

Results: Chart review identified 17 patients. The most common symptom at diagnosis was tinnitus, followed by sensorineural hearing loss, vertigo, facial pain, and headache. Physical exam revealed facial hypesthesias in 3 patients, facial paresis in 2 patients, while 14 patients had no physical exam findings on presentation. MRI studies of all patients revealed lesions which are isodense with br...

Vestibular schwannomas, meningiomas and epidermoids account for a vast majority of the lesions occurring in the cerebellopontine angle (CPA). Neoplastic and non-neoplastic pathologies other than these tumors constitute 1% of all lesions located in the CPA. The aim of this study was to reveal our experience in the treatment of the rare lesions of the CPA. We have retrospectively reviewed the med...

Epidermoid cysts are rare congenital tumors of the central nervous system (CNS), histologically benign and slowgrowing lesions. Their frequency among primitive intracranial tumors is about 1% and they account for 40% of all intracranial epidermoid of the cerebellopontine angle (CPA); there they constitute the third most frequent neoplasm (5%), after acoustic neuromas and meningiomas. We report ...

Extracranial spread of meningiomas to involve the middle ear is very rare. We present the case of a 43-year-old woman with a known cerebellopontine angle meningioma who subsequently presented with left-sided otalgia and a middle-ear mass extruding through the tympanic membrane due to local invasion of the meningioma. The tumour was excised surgically. A discussion of the relevant literature is ...

A case is presented of a patient with dysphonia, hearing loss and ataxia due to vestibulocochlear and vagal nerve compression by choroid plexus papilloma in the cerebellopontine angle. Choroid plexus papillomas are rare tumors usually arising in the lateral and fourth ventricle, and rarely found in the cerebellopontine angle, making the neuroimaging characteristics usually not sufficient for di...

The aim of this paper is to describe and evaluate the feasibility of an expanded endoscopic transcanal transpromotorial approach (ExpTTA) to the internal auditory canal and the cerebellopontine angle. To this end, we performed a cadaveric dissection study in September 2015. In total, 2 heads (4 sides) were dissected focusing on anatomical landmarks and surgical feasibility. Data from dissection...

A healthy 44-year-old woman was evaluated neurologically because she had had dizziness without vertigo and right facial pain for several months. The pain was not typical for trigeminal neuralgia, and she had had no loss of hearing. Physical examination showed no abnormalities. Cranial MR imaging was ordered for evaluation of the cerebellopontine angle. Axial MR images showed apparently normal e...

BACKGROUND The clinical outcome following surgical resection of intracranial epidermoid lesions is not well documented. We describe a case series evaluating the clinical presentation and outcome following surgery in patients diagnosed with these lesions. MATERIALS AND METHODS A retrospective study conducted over a 4-year period. RESULTS A total 38 patients who underwent surgery for intracra...