“…Stereotactic transnasal approaches to the pituitary fossa [2,5,6,11,12], posterior approach to the high cervical cord [1] and transoral approach to the foramen ovale and foramen jugulare [4] have been described in the literature. More recently, stereotactic transoral approach to the second cervical vertebral body [8], transoral and transnasal approaches to the skull base structures [9], and transnasal approach to the clivus [10] have been described.…”