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Radiosurgery for large vestibular schwannomas
The authors conducted a retrospective study of patients with large Koos grade 4 vestibular schwannomas undergoing gamma knife radiosurgery. A total of 68 patients with tumour size greater than 4 cm3 with baseline serviceable 60% hearing who received 12 Gray...
Hearing preservation after Gamma knife in vestibular schwannomas
This retrospective study reports the outcomes of hearing preservation up to three years after Gamma knife radiosurgery for Gardner-Robertson Class I (SDS>70% and PTA <30dB) patients with vestibular schwannomas. The authors report that patients with no subjective or objective hearing...
Stereotactic radiosurgery for pituitary adenomas
Residual and recurrent functioning pituitary adenomas can be difficult to delineate on postoperative MRI scans, making them difficult targets for stereotactic radio surgery. In such cases radiation delivery to the entire sellar has been utilised as a radio surgical equivalent...
Salvage surgery vs. repeat stereotactic radiosurgery for progressing vestibular schwannomas
This large multicentre case series of patients treated twice with stereotactic radiosurgery (SRS) for progressing vestibular schwannomas (VS) is reported by the International Gamma Knife Radiosurgery consortium. Progression of tumour growth after primary SRS is rare but does occur. Complications...
Acoustic schwannoma regression post-Gamma Knife treatment
In this retrospective study the authors studied the optimal interval following radiosurgery for differentiating between true growth of tumour versus pseudoprogression using serial volumetric data. A total of 118 patients with a median tumour volume of 0.74cm3 at Gamma Knife...
Is Gamma Knife Surgery effective for intracanalicular vestibular schwannomas?
Vestibular schwannomas (VSs) are rare, occurring in approximately five per 100,000 adults a year. In circa 8% of cases, the VS is contained within the internal auditory canal, i.e. intracanalicular (iVS). Although radiosurgery is a recognised treatment modality for VSs,...
Efficacy of stereotactic radiosurgery for facial nerve schwannoma
This international multicentre study reviewed the results of stereotactic radiosurgery (SRS) in 63 patients with facial nerve schwannoma over three decades. The facial nerve schwannoma were distinguished from vestibular schwannoma based on intraoperative findings or typical temporal or extra temporal...
Treatment outcomes and dose rate effects following gamma knife stereotactic radiosurgery for vestibular schwannomas
Gamma knife radiosurgery (GKRS) is one of the definitive stereotactic radiotherapy treatment modalities for vestibular schwannoma (VS) management. Its efficacy depends on the cobalt-60 source which has a half-life of 5.26 years. According to the study authors, the actual rate...
Is there a need for magnetic resonance imaging six-month post-radiosurgery for vestibular schwannoma?
With advances in imaging and radiation technologies, small, slowly growing vestibular schwannomas (VS) are treated primarily with either observation or stereotactic radiosurgery (SRS). Routine magnetic resonance (MRI) scans with gadolinium are obtained six months and one year after SRS in...
Active intervention in small schwannomas associated with higher incidence of long-term hearing loss
This article represents collaborative data of hearing outcomes from tertiary centres in Norway and the United States. They studied data of patients with less than or equal to 3cm vestibular schwannoma who underwent observation, primary microsurgery and Gamma Knife surgery...
