Lateral skull base surgery, Cochlear implant procedure, Tympanoplasty, Stapedectomy, Mastoidectomy, Acoustic neuroma su...rgery, Superior semicircular canal dehiscence, Mastoiditis, Acoustic neuroma, Tympanic membrane retraction, Hearing loss, Otosclerosis, Cholesteatoma, Pulsatile tinnitus, Vestibular disorder, CSF leak from ear