The Lund-Mackay score is a widely used method for radiologic staging of chronic rhinosinusitis.1
- 0 (no abnormality)
- 1 (partial opacification) or
- 2 (complete opacification)
The ostiomeatal complex is assigned a score of either 0 (not obstructed) or 2 (obstructed).
The sinuses are grouped into
- frontal sinus
- anterior ethmoidal cells
- posterior ethmoidal cells
- maxillary sinus
- sphenoid sinus
- ostiomeatal complex
Each side is graded separately. A combined score of up to 24 is possible. Of note, an aplastic (absent) frontal sinus receives a score of 0.
The method is intentionally simplistic, for the sake of minimising interobserver variability and expediting its application. 2 Thus, it lends itself to application by non-radiologists and in clinical studies. 1 Despite its simplicity, it correlates well with disease severity, extent of surgery, and complication rates, even independent of the extent of surgery. 3
History and etymology
It is named after its developers, British rhinologists Valerie J Lund and Ian S Mackay.
- 1. Lund VJ, Mackay IS. Staging in rhinosinusitus. Rhinology. 31 (4): 183-4. Pubmed
- 2. Oluwole M, Russell N, Tan L, Gardiner Q, White P. A comparison of computerized tomographic staging systems in chronic sinusitis. Clinical otolaryngology and allied sciences. 21 (1): 91-5. Pubmed
- 3. Hopkins C, Browne JP, Slack R, Lund V, Brown P. The Lund-Mackay staging system for chronic rhinosinusitis: how is it used and what does it predict? Otolaryngology--Head and Neck Surgery. 137 (4): 555-61. doi:10.1016/j.otohns.2007.02.004 - Pubmed