头颈部病例69分析及病例70图像

（原文GaurangShah）建议多朗读英文并口译，小编翻译供参考，愿为您的放射之路锦上添花

A37-year-oldmanpresentswithapainful,swollenjaw.37岁男性，表现为下巴疼痛、肿胀。

(A–C)Contrast-enhancedaxial(A,softtissuewindow)andcoronalreformattedsofttissue(B)andbone(C)windowCTimagesthroughthemaxillofacialbones.Thereisafluidcollectionalongthelateralaspectofthemandible(arrows).Aninternalgaspocketispresent(whitecircle).Thecollectionisincontinuitywithaperiapicallucencyalongthemandible(blackcircle)

(A-C)轴位(A，软组织窗)和冠状位软组织(B)和骨窗(C)增强CT图像。沿下颌骨外侧积液(箭头)内见小气囊(白色圆圈)。沿着下颚的根尖周围是透明影相延续(黑色圆圈)。

DifferentialDiagnosis

?Masticatorspaceabscess:Mostlikelyduetoagas-containingfluidcollectioninconjunctionwithlikelyperiapicalabscess.

?Masticatorspacehematoma:Inthesettingofimmediatetrauma,onecouldhaveagas/fluidcollectioncenteredaroundthemandible.

?Rhabdomyosar