cranial fossa的用法和樣例：
例句
- The patient underwent midline posterior fossa craniotomy and tumor excision, with prompt relief of gaze palsy.
患者接受了后顱窩中線切開術和腫瘤切除術，凝視性麻痹立即緩解。 - This is due primarily to the limited space within the posterior fossa, as well as the potential involvement of the vital brain stem nuclei.
這是因為後顱窩空間有限，並且可以累及腦幹的重要核團。
