6
Diagnosis and Treatment
Table 3. Outcome Measures and Endoscopic Grading Systems
(cont'd)
Metric
category
Instrument
name Description Scoring details MCID
Radiologic
metrics
Lund-Mackay
score
A scoring system
based on CT
scans assessing
the severity of
sinus disease
by evaluating
opacification
in each of
the paranasal
sinuses and the
ostiomeatal
complex.
Each sinus is scored
from 0 to 2, with total
scores ranging from 0
to 24. Higher scores
indicate more severe
disease.
N/A
Modified
Lund-Mackay
(Zinreich)
score
More detailed
version of the
original Lund-
Mackay score,
with a score of
0 to 5 for each
sinus, representing
the percentage
opacification from
0 to 100%, and
score of 0 to 2 for
the ostiomeatal
complex signifying
normal appearance
(0) to complete
obstruction (2).
Each side is graded
separately, with a
maximum total score of
54. Provides more detail
than the original Lund-
Mackay score.
N/A
