In this case, at the suspected level of fistula, a bony cell overhangs the anterior ethmoidal artery. This is removed and exposes the site of the leak.

• 本例病人中,在怀疑脑脊液漏的平面,有一个气房位于筛前动脉之上,去除该气房后即暴露脑脊液漏的部位。