Benign neoplasm of cranial nerves [225.1] / Neurofibromatosis, type 2 (acoustic neurofibromatosis) [237.72] / Neoplasm of unspecified nature of brain [239.6], Reason for Study: ^Reason: please evaluate brainstem tumor vestibular schwannomas Brain MRI:There is no evidence of acute ischemic or hemorrhagic lesion.The Left frontal meningeal enhancing lesion, left frontal scalp enhancing lesion, left cavernous sinus lesions and right tongue lesion do not show any significant interval change since prior exam in terms of size and MR characteristics. Upper cervical enhancing lesion likely represent spinal astrocytoma or ependymoma do not show any interval change since prior scan in terms of size and enhancement pattern.The right upper pontine enhancing lesion, likely represent right oculomotor schwannoma, does not show interval change since prior scan.There are non specific high signal intensities on bilateral subcortical white matter on FLAIR images, no change since prior scan.The ventricles, cerebral sulci and cisterns are symmetric and unremarkable. Normal flow voids are identified in the major intracranial vessels. The mastoid air cells are clear. Mucosal thickenings on bilateral maxillary sinuses.IAC MRBilateral IACs' enhancing lesions which represent vestibular schwannoma do not show any significant interval change since prior exam in terms of size and MR characteristics.Subtle enhancement of the right facial nerve tympanic segment, no change since prior scan.Bilateral superior carotid space adjacent to extracranial carotid arteries show fusiform enhancing lesions (left bigger than right) indicating schwannoma, again no change in terms of size and MR characteristics since prior scan.Small enhancing lesion on the left hypoglossal canal extending toward left side superior aspect of the carotid space enhancing lesion likely represent schwannoma, no change since prior scan in terms of size and MR characteristics.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Multi-focal various sized lesions represent schwannomas, meningioma do not show any interval change in terms of size and MR characteristics.3. Bilateral internal auditory canal lesions and skull base lesions, again do not show any interval change since prior exam. 4. Parenchymal lesion on the upper cervical spinal cord do not show any interval change since prior scan.