Disease relevance of Cerebellopontine Angle

• In the setting of progressive sensorineural hearing loss, atypical Meniere disease, or recurrent vertigo, the presence of a mass in the labyrinth or labyrinthine windows- delineated on CT or MR images, despite a normal internal auditory canal, cerebellopontine angle, or brain stem - is highly suggestive of intralabyrinthine schwannoma [1].
• Tomography of the porus acusticus internus and CT scanning are the initial radiological methods in patients with signs of cerebellopontine angle lesions; if no lesion is disclosed by these two methods cisternography with metrizamide should be performed to exclude a small tumour, particularly a small acoustic neurinoma [2].
• The use of reticulin fiber staining of cytologic crush preparations for the rapid differentiation of schwannomas and meningiomas of the cerebellopontine angle was studied [3].
• In addition these investigations afford interesting insights into CSF dynamics in apparently complete membranous or tumorous obstruction of the fourth ventricle and into the genesis of internal hydrocephalus in cerebellopontine angle tumors [4].
• Surgical management of cholesterol granuloma with cerebellopontine angle extension is recommended [5].

High impact information on Cerebellopontine Angle

• RESULTS: Cerebellopontine angle cisternal application of bFGF ameliorated cochlear nerve degeneration after the compression [6].
• Our purpose was to investigate the cause of signal loss in CSF in the prepontine or cerebellopontine angle cistern on 2D FSE MR images and to compare the cisternographic effects of 2D and 3D FSE sequences [7].
• Death from a malignant cerebellopontine angle triton tumor despite stereotactic radiosurgery. Case report [8].
• The fourth patient with the malignant meningioma in the left cerebellopontine angle has had no recurrence for 24 months [9].
• Magnetic resonance images showed a lesion of the internal auditory canal and cerebellopontine angle that was hypointense on T1-weighted images, hyperintense on T2-weighted images, and enhanced after the administration of gadolinium [10].

Chemical compound and disease context of Cerebellopontine Angle

• A unique case is described of a 28-year-old man who had seizures and a hemorrhage within a previously unsuspected cerebellopontine angle schwannoma within minutes of nasally inhaling cocaine [11].

Biological context of Cerebellopontine Angle

• In a retrospective case study of a patient with a right-sided cerebellopontine angle mass lesion, transient evoked otoacoustic emissions were robustly present despite a severe to profound sensorineural hearing loss and abnormal auditory brainstem response [12].

Anatomical context of Cerebellopontine Angle

• Topical papaverine and facial nerve dysfunction in cerebellopontine angle surgery [13].
• MR imaging of the inner ear and cerebellopontine angle performed with 3D T2-weighted turbo spin-echo and gadolinium-enhanced 3D T1-weighted gradient-echo sequences provided the most accurate imaging leading to diagnosis in cases of abnormality [14].
• In these patients, recurrent or persistent nasopharyngeal carcinoma involving the cerebellopontine angle, temporal bone, or parotid should be excluded [15].
• MATERIAL AND METHODS: Primary bone cell cultures of stapes and external auditory canal (EAC) bone were obtained from 33 patients with otosclerosis and 18 control patients undergoing cerebellopontine angle tumor surgery [16].

Associations of Cerebellopontine Angle with chemical compounds

• Epidermoid tumor of the cerebellopontine angle: diagnostic value of computed tomographic metrizamide cisternography [17].
• 60 cases of bilateral cerebellopontine angle pantopaque cisternography done between May, 1972, and April, 1974, are reported [18].
• Malignant triton tumour in the cerebellopontine angle. Report of a case [19].
• Iophendylate cisternography in diagnosis of cerebellopontine angle tumors. Report of 60 cases [18].
• RESULTS: NE cysts occurred in the cerebellopontine angle in one case and extended from the cerebellopontine angle to the C2 level in a second [20].

Gene context of Cerebellopontine Angle

• They were examined in three groups according to the anatomical location of the lesion: Group A included 15 patients with midline tumors; Group B included 14 patients with cerebellar hemispheric tumors; and Group C included 11 patients with cerebellopontine angle (CPA) tumors [21].
• Cerebellopontine angle involvement by nasopharyngeal carcinoma [22].
• We evaluated the feasibility of MR cisternography by the balanced fast-field-echo (bFFE) sequence, comparing with that by a turbo-spin-echo (TSE) sequence, for cerebellopontine angle lesions on a 1.5-T imager (Gyroscan Intera, Philips, Best, The Netherlands) [23].
• 53 patients clinically suspected of having a cerebellopontine angle (CPA) lesion were examined by computer tomography (CT) with 160 X 160 matrix EMI scanner [24].
• This paper reviews 180 cerebellopontine angle lesions in regard to results and complications of the surgical management with special emphasis on the diagnosis, surgical removal, and results in 60 large (4 cm. or greater) tumors of the CPA [25].

Analytical, diagnostic and therapeutic context of Cerebellopontine Angle

• Other indications include hearing and visual evaluation, especially in neonates, diagnosis of brainstem and cerebellopontine angle tumours, monitoring the integrity of sensory function during surgery for scoliosis or neurosurgical procedures and differentiating toxic or metabolic causes of coma from irreversible structural lesions [26].

References