Lund–Mackay score assessment
The Lund–Mackay method was used to assess the HRCT images of chronic
rhinosinusitis. Right and left sides were each grouped into six sinus
areas including maxillay, anterior ethmoidal, posterior ethmoidal,
sphenoid, frontal, and ostiomeatal complex. The severity of sinus mucosa
opacification was scored as 0 (with no abnormality), 1 (partial
opacification), or 2 (complete opacification). The ostiomeatal complex
was assigned a score of either 0 (not obstructed) or 2 (obstructed).