头颈部病例1答案及病例2图像

(A–C)AxialpostcontrastCTimagesofbone(A)andsofttissue(B);algorithmswereobtainedalongwithacoronalsofttissuereformat(C).Thereisextensiverightperiorbitalandintraorbitalsofttissueswelling.Arim-enhancingfluidcollectionispresentalongtherightlaminapapyracea(arrow).Theadjacentrightethmoidsinusesareextensivelyopacified(arrowheads).

(A-C)：骨(A)和软组织(B)的轴位增强CT图像及冠状软组织窗重建图像(C)。右眶周和眶内广泛软组织肿胀，沿右侧筛骨纸板(箭头)可见边缘增强的积液影，邻近的右筛窦内广泛混浊(箭头)。

DifferentialDiagnosis

?Subperiostealabscess:Byfar,themostlikelydiagnosisgiventheethmoidsinusdisease,fluidcollection,andadjacentinflammatorychanges.

?Orbitalpseudotumor:Canpresentwithpainfulproptosisandpostseptalinflammatorychanges;however,fluidcollectionisnotafeatureofthisdiseaseprocessandthereisnoassociationwithparanasalsinusdisease.

?Orbitalrhabdomyosar