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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. [1] Indications include unilateral hearing loss (85%), speech impediments, disequilibrium, tremors or other loss of motor control.
The translabyrinthine approach is a surgical approach to treating serious disorders of the cerebellopontine angle, (CPA), which is the most common location of posterior fossa tumors. especially acoustic neuroma. [1]
Epidermoid tumors strongly adhere to the brain stem or cranial nerves. Often the lining of the tumor connected to the brain stem or parts difficult to "peel" away are left behind leaving residual tumor after surgery, this can contribute to the risk of regrowth. About 40% of these cysts originate in the cerebellopontine angle. [3]
The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern. The pia mater follows the outline of the fissure and the arachnoid mater continues across the divide so that the subarachnoid space is dilated at this area, forming the cerebellopontine angle cistern. [citation needed]
IAC tumors that grow beyond 1.5 cm in diameter expand into the relatively empty space of the cerebellopontine angle, taking on the characteristic 'ice-cream-cone' appearance seen on MRIs. As 'space-occupying-lesions,' the tumors can reach 3 to 4 cm or more in size and infringe on the facial nerve (facial expression) and trigeminal nerve (facial ...
Bruns nystagmus is an unusual type of bilateral nystagmus most commonly occurring in patients with cerebellopontine angle tumours.It is caused by the combination of slow, large amplitude nystagmus (gaze paretic nystagmus) when looking towards the side of the lesion, and rapid, small amplitude nystagmus (vestibular nystagmus) when looking away from the side of the lesion. [1]
Cerebellopontine angle cistern. It is situated at the cerebellopontine angle – the lateral angle between the cerebellum and the pons. It contains: The seventh (VII) and eighth (VIII) cranial nerves; The anteroinferior cerebellar artery (AICA) The fifth (V) cranial nerve and the petrosal vein; Quadrigeminal cistern - It is situated dorsal to ...
cerebellopontine angle tumor, vestibular schwannoma: nystagmus that coarsens in amplitude on lateral gaze Brushfield spots: Thomas Brushfield: ophthalmology, genetics: Downs' syndrome or non-pathological: greyish-white spots at periphery of iris Buerger's test: Leo Buerger: general medicine, surgery: peripheral artery disease: pallor of the leg ...