目的：探讨CT对蝶筛区域解剖结构的评价能力，以期为功能性内窥镜鼻窦外科手术提供帮助。
Purpose: To evaluate the CT findings of spheno-ethmoidal region related to functional endoscopic sinus surgery.
任何蝶鞍部的颅咽管瘤都有潜在性的侵袭破坏蝶鞍和筛窦。
Potentially any craniopharyngioma at the sellar region may invade into and destroy the underlying sella turcica and clivus (above sphenoid sinus).
结论：CT扫描能显示蝶筛区域与功能性内窥镜鼻窦外科手术有关的绝大部分解剖结构及其变异，对手术有很大的指导作用。
Conclusion: ct is able to screen the anatomy and the variations of spheno-ethmoidal region related to function endoscopic sinus surgery. This is a good guide to the surgery.
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