Yeh I K, Wu I S
Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua, Taiwan.
B-ENT. 2013;9(2):117-21.
To understand the relationship between the vidian canal and surrounding structures of the sphenoid sinus, and to discover factors related to the formation of various canal corpus types using preoperative computed tomography (CT).
This retrospective study included 265 patients with 570 sides of identifiable vidian canal. All patients underwent paranasal sinus CT with 3-mm contiguous coronal and axial sections. Subsequently, the relationships amongst the different canal corpus types, pneumatization of the pterygoid recesses, morphometric parameters, and surrounding anatomical landmarks were investigated.
Dehiscence of the bony roof of the canal was much more commonly seen in canal corpus types 2 and 3 than type 1 (p < 0.001). The presence of pterygoid recess pneumatization was more commonly seen in canal corpus types 2 and 3. More extensive pneumatization of the pterygoid recess was associated with a greater distance from the canal to the foramen rotundum (p < 0.001), but there were no significant differences in the distance from the vidian canal to the vomerine crest (p = 0.465).
Pterygoid recess pneumatization might alter the position of the vidian canal relative to the sphenoid corpus and the distance to the foramen rotundum, but not the distance to the vomerine crest. Therefore, analyzing the canal corpus type and pneumatization of the pterygoid recess may play a key role when choosing a surgical approach in endoscopic vidian neurectomy.
了解翼管与蝶窦周围结构的关系，并利用术前计算机断层扫描（CT）发现与各种管体类型形成相关的因素。
这项回顾性研究纳入了265例患者共570侧可识别的翼管。所有患者均接受了鼻窦CT检查，扫描层厚为3mm，包括连续的冠状位和轴位图像。随后，研究了不同管体类型、翼突隐窝气化、形态学参数以及周围解剖标志之间的关系。
管体类型2和3的管骨顶裂开比类型1更为常见（p<0.001）。翼突隐窝气化在管体类型2和3中更为常见。翼突隐窝更广泛的气化与管至圆孔的距离更大有关（p<0.001），但翼管至犁骨嵴的距离无显著差异（p=0.465）。
翼突隐窝气化可能会改变翼管相对于蝶骨体的位置以及至圆孔的距离，但不会改变至犁骨嵴的距离。因此，在内镜下翼管神经切断术选择手术入路时，分析管体类型和翼突隐窝气化情况可能起着关键作用。
