Encounter for other preprocedural examination [Z01.818] / Benign neoplasm of cranial nerves [D33.3], Reason for Study: ^Reason: PRE-OP please do at 6:00am in CCD. Please page neurosurgery resident to place fiducials. Cerebellar angle tumor. Multiple fiducial markers attached on scalp for the preparation of surgical planning.There is 30.3mm x 42.9mm sized right CP angle extra axial mass which shows mainly low signal intensity on T2 with central high signal intensity cystic portion and enhancement on Gad. The mass generates mass effects toward brainstem.The mass appears to be extended into the right internal auditory canal with mild enlargement of the IAC. Constellation of above findings suggest possible diagnosis of Neurogenic tumor with the differential diagnosis of meningioma.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no evidence of acute ischemic or hemorrhagic lesion.Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Right cerebellopontine angle mass with mass effects. Differential diagnosis include neurogenic tumor and meningioma.2. No evidence of acute ischemic or hemorrhagic lesion.