CT Paransal sinuses
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CT and MRI through the paranasal sinuses demonstrate a large aggressive mass the epicentre of which appears to be centred in the superior aspect of the nasal cavity.
The mass extends superiorly into the anterior cranial fossa, laterally into the orbit and posteriorly into the sphenoid sinus. The outflow of the sphenoid sinus and left frontal sinus are presumably obstructed as the sinuses are opacified.
The mass is of soft tissue density, intermediate signal on T1 and T2 weighted images and demonstrates extensive heterogeneous enhancement following administration of contrast.