- 期刊
- OpenAccess
Computed Tomography of Primary Empty Sella Syndrome
空蝶鞍症候群之電腦斷層影像
摘要
空蝶鞍症候群是一常見但不甚為臨床醫師所重視之症候群，患者常有頭痛、視力及內分泌不調等問題。吾等回溯34例空蝶鞍症候群病患的電腦斷層影像，腦下垂體可見於18例患者，但其高度均少於2mm，餘16例腦下垂體皆不可見。腦下垂體柄可清晰見於軸狀及冠狀切面者26例；只見於軸狀切面者5例；只見於冠狀切面者一例，皆不見於軸狀及冠狀切面者2例。在軸狀切面上可見腦下垂體柄之31例中，有18例(58.1%)其腦下垂體柄距鞍背超過2mm以上，餘16例(41.9%)其腦下垂體柄則緊靠著鞍背，文獻報告以電腦斷層掃描診斷空蝶鞍所使用之腦下垂體柄跡像(infundibular sign)，泛指使用在冠狀切面上，吾等認為此跡像亦可應用在軸狀切面上，用以診斷空蝶鞍。此外吾等亦發現此類病患視覺上的問題與視徑交叉之下凹無一直接的關係。
並列摘要
We reviewed the CT of 34 patients of empty sella syndrome which was commonly associated with headache, visual problems and endocrine disturbances. Among them, the pituitary gland was not distinguished in 16 patients while a very small gland (less than 2 mm in height) was noted in 18 patients. The pituitary stalk was well demonstrated in 26 patients in both axial and coronal sections; 5 patients only in axial section and 1 patient in coronal section. In 2 other patients, the stalk was nonvisualized in both axial and coronal sections. Of those 31 patients whose stalks well demonstrated in axial section, their stalks located more than 2 mm in front of the dorsum sella in 18 patients (58.1%) while it was close to the dorsum sella in 13 patients (41.9%). In tradition, the infundibulum sign was applied only in coronal section, but we suggest that this sign can also be fit in axial section. Moreover, we found that there was no direct relationship between visual problems and downward herniated optic chiasma in patients of empty sella syndrome.