In the Lund-Mackay staging system for chronic rhinosinusitis, what is the maximum total score when both sides are scored?
- A 12
- B 20
- C 24 ✓
- D 30
Correct answer: C. 24
Explanation
The Lund-Mackay system scores five sinuses on each side (maxillary, anterior ethmoid, posterior ethmoid, sphenoid and frontal) from 0 to 2, giving 10 points per side, plus the ostiomeatal complex scored 0 or 2, giving 2 more points per side. Each side therefore totals 12 points and both sides together give a maximum of 24. Scores of 20 or 30 come from miscounting the number of scored structures or sides.
Reference: Scott-Brown's Otorhinolaryngology and Head and Neck Surgery, 8th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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