PMC6334571_01
Axial slice on a T1-weighted image after gadolinium-diethylenetriaminepentacetate administration focusing on the cavernous sinus (a), jugular fossa (b), and coronal section of the jugular vein level (c). There is nonenhancement in the right cavernous and sigmoid venous sinus, contiguous with the jugular vein, compatible with sphenoiditis-resultant right cavernous sinus thrombosis and deep venous thrombosis of the right cerebrum and neck. T2-weighted image axial section at the mid sphenoid level (d). There is mucus in the right sphenoid sinus (white arrow), right mastoiditis, and a bright signal in the right sigmoid sinus and jugular fossa indicating nonflow void in the venous sinus and jugular vein
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F1
Brain magnetic resonance imaging (MRI) on the 6th HD showed a right sphenoid sinus mucocele with a right cavernous sinus and internal jugular vein thrombosis [Figure 1].