PMC6417297_01
PMC6417297_02
PMC6417297_03
(a-c) Postcontrast and Fast Imaging Employing Steady-state Acquisition magnetic resonance imaging showing vestibular schwannoma in the left intrasellar arachnoid cyst (d-f) Treatment plan: Axial postcontrast and fast imaging employing steady-state acquisition magnetic resonance imaging showing targeted lesion in red, covered by the 14 Gy green prescription isodose line of 80%. Facial nerve received 4.4 Gy (light blue line). The red point represents maximum dose of 17.5 Gy (g-i) 4-day follow-up post-contrast magnetic resonance imaging's at the time of the acute facial weakness. The facial nerve tympanic segment and geniculate ganglion showed increased enhancement (arrow) (j-l) Postcontrast magnetic resonance imaging 6 months following stereotactic radiosurgery with overall stable size of the tumor
AJNS-14-262-g001.jpg
PMC6417297_03_AJNS-14-262-g001.jpg
F1
An MRI displayed a slight increase in size of the Cerebellopontine angle (CPA) portion of the vestibular schwannoma to 10 mm x 8 mm compared to 9 mm x 6 mm pre-SRS with central hypo-intensity along with increased enhancement of the left facial nerve [Figure 1].