Comparison of MRI and CT in the Evaluation of Unilateral Maxillary Sinus Opacification

Table 1

10-point diagnostic certainty criteria.

Lesion characterisation	Cystic/solid
	Polypoidal/mass
	Bone changes
	Aggressive/nonaggressive
Anatomic origin of the lesion	Maxillary ostium size
	Maxillary ostium opacification
	Maxillary origin
Involvement of secondary structures	Perineural invasion
	Soft tissue involvement
	Proximity to vessels

Each point scored as 0 (not defined) or 1 (defined).