The imaging of sinus pathology, both benign and malignant, has undergone radical changes from the era of plain film radiography. The current application of high-resolution CT and MRI to this anatomic region has benefited patients, reduced unnecessary surgery, and allowed the introduction of a whole new surgical technique into common use. CT is accepted as the gold standard for pathological-anatomical evaluation of paranasal sinus disease; CT is especially considered an obligatory part of planning surgical procedures. Indications for paranasal sinus CT include trauma, malignant disease, and...