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Lund-Mackay score

The Lund-Mackay score is a widely used method for radiologic staging of chronic rhinosinusitis 1.

When reading a CT scan of the paranasal sinuses and ostiomeatal complex, the reader assigns each sinus a score of:

  • 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:

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 minimizing 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.

Article information

rID: 51934
System: Head & Neck
Synonyms or Alternate Spellings:
  • Lund-Mackay scoring
  • Lund-Mackay staging
  • Lund and Mackay score

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