Epilepsy surgery, Pituitary tumor surgery, Computer assisted brain surgery, Endoscopic procedure, Minimally invasive ne...urosurgery, Acoustic neuroma surgery, Intraoperative magnetic resonance imaging, Transsphenoidal surgery, Skull base surgery, Brain tumor, Meningioma, Epilepsy, Pituitary tumor, Acoustic neuroma, Chondrosarcoma, Craniopharyngioma, CSF leak, Cavernous malformations, Chordoma, Skull base tumor