【摘要】 目的 :探讨上颌骨牙源性角化囊肿 (OKC)的CT表现及特征。方法 :回顾性分析经手术病理证实的 4 8例上颌骨OKC的CT征象。结果 :CT清晰显示上颌骨OKC有沿牙槽突长轴发展的特点 36例 (75 .0 % ) ;向唇颊侧膨胀 35例(72 9% ) ,膨胀骨边缘有多发骨嵴 36例 (75 .0 % ) ,尖牙及磨牙区OKC突入上颌窦腔内、膨胀骨边缘与上颌窦骨壁形成“双壳”征象 37例 (77.0 % ) ,测 18例CT值平均达 32HU。结论 :CT检查能很好的显示上颌骨OKC的表现及特征 ,有助于诊断及鉴别诊断 ,指导临床手术方案的制定。更多还原

【Abstract】 Objective:To investigate the CT features of OKC in maxilla.Methods:The CT features of OKC in 48 cases confirmed by operation and pathology were reviewed retrospectively.Results:CT scanning can clearly manifest OKC in maxilla tending to grow along longitudinal axis of maxilla (75.0%), and expand towards labiolveolar side (72.9%), unlike the sign in which orientation the lesion expands.There are multiple crests of bone at the edge of the lesions (75.0%), but no septum is manifested in this group.“Double shell" sign consisted of the edge of OKC and paries of maxillary sinus is manifested when the lesion is in molar or canine zone (77.0%). The average density in 18 cases is 32HU.Conclusion:CT scanming can manifest features of OKC in maxilla and is helpful for diagnosis and differential diagnosis of OKC, and valuable for surgical strategy.更多还原