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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 cerebellopontine angle (CPA) (Latin: angulus cerebellopontinus) is located between the cerebellum and the pons. [1] The cerebellopontine angle is the site of the cerebellopontine angle cistern. [2] The cerebellopontine angle is also the site of a set of neurological disorders known as the cerebellopontine angle syndrome.
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]
His basic study published in 1917 was entitled Tumors of the Nervus Acusticus and the Syndrome of the Cerebellopontine Angle. Cushing perfected the retrosigmoid surgical approach, and by doing suboccipital craniotomy and subtotal removals he was able to reduce mortality to 4% by 1931. Cushing worked at Brigham Hospital in Boston.
Cerebellopontine angle tumour (junction of the pons and cerebellum) – The cerebellopontine angle is the exit site of both the facial nerve(CN7) and the vestibulocochlear nerve(CN8). Patients with these tumors often have signs and symptoms corresponding to compression of both nerves.
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]
This junction between the pons, medulla, and cerebellum that contains the 8th nerve is called the cerebellopontine angle. The vestibulocochlear nerve is accompanied by the labyrinthine artery , which usually branches off from the anterior inferior cerebellar artery at the cerebellopontine angle, and then goes with the 7th nerve through the ...
The junction of pons, medulla oblongata, and cerebellum forms the cerebellopontine angle. [6] The superior pontine sulcus separates the pons from the midbrain. [7] Posteriorly, the pons curves on either side into a middle cerebellar peduncle. [4] A cross-section of the pons divides it into a ventral and a dorsal area.