Türk Nöroşirürji Dergisi
2016 , Vol 26 , Num - Ek
Vestibular Schwannomas in Pediatric Age Group
Celal Bayar Üniversitesi, Tıp Fakültesi, Nöroşirürji Anabilim Dalı, Manisa, Türkiye
Vestibular schwannomas are benign tumours of the nerve sheath schwann cells and its incidence in all age groups is approximately
13/1.000.000. Schwannomas are usually round or lobule, well-circumscribed, encapsulated tumors and are not exhibit malignant
degeneration. Schwannomas constitute approximately 2% of posterior fossa tumors in childrens and are often associated with
NF 2. Patients may present with cerebellar symptoms, facial and other cranial nerve palsy, ataxia, hearing loss, hydrocephalus,
increased intracranial pressure signs such as nausea or vomiting or other symptoms of NF type 2. In diagnosis, CT and MRIs are
used. Treatment options include follow-up, surgery and stereotactic radiosurgery. Asymptomatic patients with NF type 2 and VS or
if the hearing is preserved, observation could be suggested regardless of the size of the lesion. In the presence of any symptoms or
worsening of the hearing active treatment methods should be used. Tumor size is ≥ 1.5 cm in diameter or tumor size <1.5 cm but
to protect hearing and / or when rapid growth is detected or in the presence of brainstem compression or hydrocephalus surgery
could be used. Gamma Knife surgery is another treatment method used in the treatment however there is no adequate literature for
pediatric patients.
Anahtar Kelimeler :
Neurofibromatosis type 2, Pediatric schwannoma, Surgery, Gamma knife surgery