PMC5991265_01
CT scan illustrating the extent and the location of the suppurative collection. (a) Transverse plane; (b) sagittal plane reconstruction; (c) coronal plane reconstruction
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F1
The scan revealed a multilobular cystic lesion with peripheral contrast enhancement, located in the subdural space of the posterior fossa, in contact with the tentorium cerebelli superiorly [Figure 1].
Preoperative MRV showing the deficient filling of the left transverse and sigmoid sinuses
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F2
MRV revealed diminished flow through the left transverse sinus and no flow through the left sigmoidal sinus [Figure 2], and these findings were consistent with sinus thrombosis.
Postoperative (26 days following the operation) MRI (T1 weighted) documenting the successful evacuation of the purulent collection. (a) Transverse plane; (b) sagittal plane; (c) coronal plane
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F3
Follow-up MRI scan documented the successful evacuation of the empyema and subsiding inflammation [Figure 3].