There is mucoperiosteal thickening in the nasal cavity.   [Yes/No]

There is ulceration or erosion of the nasal septum or turbinates.   [Yes/No]

There is mucosal thickening of the posterior lateral walls of the nasal cavity, cribriform plate or the face of the sphenoid bone.   [Yes/No]

There is infiltration of the fat surrounding the nasolacrimal sac.   [Yes/No]

There is infiltration of soft tissues or bone erosion along the nasolacrimal fossa or canal.   [Yes/No]

There is soft tissue swelling anterior to the frontal sinus or in the soft tissues surrounding the maxillary sinuses.   [Yes/No]

There is mucoperiosteal thickening in the sinuses.   [Yes/No]

There is mucosal enhancement in the sinuses.   [Yes/No]

There is an air fluid level in the frontal sinus.   [Yes/No]

There is bone erosion along the walls of any affected sinuses.   [Yes/No]

There is an appearance of bone expansion, due to regressive remodeling and suggestive of pre-existing mucocele, along the walls of any affected sinuses.   [Yes/No]

The extraconal orbital fat is abnormal.   [Yes/No]

There is a subperiosteal abscess or edema along the medial wall, roof or floor of the orbit.   [Yes/No]

The extraocular muscles are swollen or otherwise abnormal.   [Yes/No]

There is bone erosion along the walls of the orbit.   [Yes/No]

The intraconal orbital fat is infiltrated.   [Yes/No]

The orbital apex and the superior and inferior orbital fissures are infiltrated.   [Yes/No]

The superior and/or inferior ophthalmic veins are dilated or thrombosed.   [Yes/No]

Proptosis is present.   [Yes/No]

The optic nerve is stretched in appearance.   [Yes/No]

The posterior aspect of the globe is tented in appearance.   [Yes/No]

The uveal scleral margin of the globe is swollen or enhancing abnormally.   [Yes/No]

Signs of tension orbit or endophthalmitis are present.   [Yes/No]

There is a deeply infiltrating or necrotic/ulcerative process of the nasopharynx.   [Yes/No]

There is a subperiosteal fluid collection or abscess along the boney walls of the anterior or middle cranial fossa.   [Yes/No]

There is an epidural fluid collection or abscess along the boney walls of the anterior or middle cranial fossa.   [Yes/No]

There is a subdural fluid collection or abscess along the boney walls of the anterior or middle cranial fossa.   [Yes/No]

There is a subdural fluid collection or abscess along the falx cerebri or within the tentorium.   [Yes/No]

There is evidence of thrombus, thrombophlebitis or other occlusive or inflammatory process of the cortical veins, sphenoparietal sinus or sagittal sinus.   [Yes/No]

There is evidence of thrombus, thrombophlebitis or other occlusive or inflammatory process of the cavernous sinus.   [Yes/No]

There is evidence of inflammation of the distal internal carotid artery.   [Yes/No]

There is evidence of an infectious aneurysm.   [Yes/No]

There is brain edema specifically involving the frontal and temporal lobes.   [Yes/No]

There is cerebritis specifically involving the frontal and temporal lobes.   [Yes/No]

There is brain abscess specifically involving the frontal and temporal lobes.   [Yes/No]

There is likely meningitis, meningoencephalitis with complicating hydrocephalus or brain herniation.   [Yes/No]

The anterior ethmoid arteries are on a mesentery.   [Yes/No]

The medial walls of the orbit position are abnormal due to their position or a significant dehiscence.   [Yes/No]

The overall cephalocaudal dimensions of the ethmoid complex are unusual small.   [Yes/No]

The olfactory fossa has an abnormal depth relative to the roof of the ethmoid complex and the cribriform plate has a significant dehiscence.   [Yes/No]

The carotid artery and optic nerves adjacent to the sphenoid sinus are in an abnormal position and/or the overlying bone shows significant dehiscence.   [Yes/No]