I. Introduction II. Supratentorial intrinsic neoplasm a. Low grade gliomas i. Right frontal pole low grade glioma ii. Right peri-Rolandic low grade glioma iii. Left peri-Rolandic high grade glioma iv. Left Broca's area low grade glioma v. Left Wernicke's area low grade glioma vi. Right insular low grade glioma vii. Left insular low grade glioma viii. Occipital lobe low grade glioma ix. Gliomatosis cererbi b. High grade gliomas i. Right frontal pole high grade glioma ii. Right peri-Rolandic high grade glioma iii. Left peri-Rolandic high grade glioma iv. Left Broca's area high grade glioma v. Left Wernicke's area high grade glioma vi. Right insular high grade glioma vii. Left insular high grade glioma viii. Occipital lobe high grade glioma ix. Left thalamic high grade glioma x. Left basal ganglia high grade glioma xi. Recurrent high grade glioma c. Metastatic tumors i. Peri-Rolandic metastasis ii. 2 metastases iii. 3 metastases iv. Basal ganglia metastasis v. Multiple metastases but one is symptomatic vi. Intraventricular metastasis vii. Sellar metastasis d. Other lesions i. Peri-Rolandic abscess ii. Temporal arachnoid cyst iii. Sphenoid encephalocele III. Infratentorial intrinsic neoplasm i. Cerebellar metastasis ii. Cerebellar hemangioblastoma iii. Middle cerebellar peduncle cavernoma iv. Vermian metastasis v. Medullary non exophytic glioma vi. Medullary exophytic glioma IV. Intraventricular lesions i. Colloid cyst ii. Intraventricular meningioma iii. Central neurocytoma iv. Craniopharyngioma with extension into the 3rd ventricule v. 4th ventricular ependymoma vi. Choroid plexus papilloma vii. Medulloblastoma V. Anterior fossa skull base lesions i. Olfactory groove meningioma ii. Esthesioneuroblastoma iii. Parasagittal meningioma iv. Parafalcine meningioma v. Pituitary adenoma vi. Skull base metastasis vii. Craniopharyngioma VI. Middle fossa skull base lesions i. Medial sphenoid wing meningioma ii. Lateral sphenoid wing meningioma iii. Cavernous sinus meningioma VII. Posterior fossa skull base lesions i. Vestibular schwannoma ii. CPA meningioma iii. Petro-clival meningioma VIII. Sinonasal malignancies i. Squamous cell carcinoma ii. Juvenile nasopharyngeal fibroma iii. Sinonasal undifferentiated carcinoma