Figure 8: 67-year-old diabetic patient with numb centrally located headache.
a) Coronal reconstructed DVT demonstrates inflammatory changes of the posterior ethmoid cells (arrow) and the sphenoid sinus on the left side.
b) New onset of seizure a few hours after the DVT. T2w MR images demonstrate a ring-like mass (arrow) with surrounding edema (arrowhead).
c) The lesion displays homogenous ring-like enhancement on axial T1w images.
d) Contrast-enhanced coronal T1w images demonstrate extension to the dura and the thrombosed cavernous sinus. Fungal sinusitis was confirmed by surgery.