MRI and computed tomography of fungal sinus disease. Axial T2 ... (minimal involvement), pterygoid plates, sphenoid or frontal sinuses: T4b: Very advanced ... Axial contrast enhanced CT images ...

Preoperatively, axial (a) and coronal (b) contrast enhanced CT scan showed an expanded lesion in the right sphenoid sinus with thinning and erosion of the sinus wall into the right orbit.