Skull Base NeoplasmsSkull BaseSkullSkull NeoplasmsLungChordomaSkull FracturesCerebrospinal Fluid RhinorrheaSurgical EquipmentMeningiomaLung NeoplasmsSphenoid SinusCraniotomyLung DiseasesBase PairingSphenoid BoneBase SequenceMeningeal NeoplasmsCranial Fossa, PosteriorEthmoid BoneTomography, X-Ray ComputedCranial Nerve DiseasesEndoscopyPetrous BoneNeuronavigationParanasal Sinus NeoplasmsOtorhinolaryngologic Surgical ProceduresCranial Nerve NeoplasmsNasal CavityTemporal BoneParanasal SinusesLung Injury