Table 2.

A) Nasal polyp score (NPS). B) Lund-Mackay CT staging. Legend: 0 = no abnormality; 1 = partial opacification; 2 = total opacification; ∗ 0 = not occluded, 2 = occluded; max. score = 12 per side

A) Nasal polyp score (NPS)

Endoscopic findings (score each side separately)

0 = no polyps

1 = small polyps in the middle meatus/edema

2 = middle meatus blocked

3 = polyps extending beyond the middle meatus, without a complete obstruction, or extending to the sphenoethmoidal recess

4 = massive nasal polyposis

B) Lund-Mackay CT staging

Paranasal sinuses (score each side separately)

Maxillary (0,1,2)

Anterior ethmoid (0,1,2)

Posterior ethmoid (0,1,2)

Sphenoid (0,1,2)

Frontal (0,1,2)

Osteomeatal complex (0,2)∗