"The typical presentation is with adult-onset sensorineural hearing loss or non-pulsatile tinnitus. The cause of hearing loss remains uncertain and does not appear to be simply due to compression of the cochlear nerve by the tumour24 . A number of other possibilities have been proposed, including dysfunction of perilymphatic CSF flow, neurovascular compromise, or altered permeability of the blood-labyrinth barrier 24."
"There is also an association with communicating hydrocephalus, which is thought to be secondary to high CSF protein levels with subsequent impairment of the CSF resorption mechanism 25,26. Communicating hydrocephalus can also be present with small tumours25,26 ."
"The typical presentation is with adult-onset sensorineural hearing loss or non-pulsatile tinnitus. The cause of hearing loss remains uncertain and does not appear to be simply due to compression of the cochlear nerve by the tumour24 . A number of other possibilities have been proposed, including dysfunction of perilymphatic CSF flow, neurovascular compromise, or altered permeability of the blood-labyrinth barrier 24."
"There is also an association with communicating hydrocephalus, which is thought to be secondary to high CSF protein levels with subsequent impairment of the CSF resorption mechanism 25,26. Communicating hydrocephalus can also be present with small tumours25,26 ."
"Post-operative MRI"
"Schwann cells, and hence schwannomas, are named after the German physician and physiologist Theodor Schwann (1810–1882) 13."
"The term acoustic neuroma, although very frequently used, is a misnomer as these tumours arise from Schwann cells 13. As the vast majority of tumours in this location arise from the vestibular portion of the vestibulocochlear nerve, many favour the term vestibular schwannoma. It should be noted, however, that not all schwannomas extending within the internal auditory meatus are vestibular schwannomas. Some are in fact cochlear schwannomas (see intracochlear schwannoma), some are facial nerve schwannomas, and others are nervus intermedius schwannomas."
"The term acoustic neuroma, although very frequently used, is a misnomer as these tumours arise from Schwann cells 13. As the vast majority of tumours in this location arise from the vestibular portion of the vestibulocochlear nerve, many favour the term vestibular schwannoma. It should be noted, however, that not all schwannomas extending within the internal auditory meatus are vestibular schwannomas. Some are in fact cochlear schwannomas (see intracochlear schwannoma), some are facial nerve schwannomas, and others are nervus intermedius schwannomas."
"Antoni A"
"Verocay bodies: nuclear-free zones of processes lying between regions of nuclear palisading"
"Antoni B"
"Overall tumour recurrence is low, ranging between 1-9% 8."
Expected headings
"Radiographic features"
"Location"
"Tumour consistency"
"CT"
"MRI"
"Post-operative MRI"
"There is also an association with communicating hydrocephalus, which is thought to be secondary to high CSF protein levels with subsequent impairment of the CSF resorption mechanism 25,26. Communicating hydrocephalus can also be present with small tumours25,26 ."
"There is variability in the growth rate of vestibular schwannomas; accordingly, the decision to treat requires consideration of the patient's age and comorbidities. The options include 6 :"
"a small "CSF cap" typically remains, separating intracanalicular tumour from the cochlea; however, growth laterally through the cochlea (transmodiolar) or vestibule (transmacular) into the middle ear may occasionally occur"
"Contrast enhancement is present but can be underwhelming, especially in larger lesions with cystic components. Many cysts are loculations of CSF adjacent to a vestibular schwannoma; others represent cystic degeneration within schwannomas."
"There is variability in the growth rate of vestibular schwannomas; accordingly, the decision to treat requires consideration of the patient's age and comorbidities. The options include 6 :"