Yoon et al reported a modification of the LRINEC score that uses findings seen on MRI of the affected site. This can aid in the distinguishing of necrotizing from non-necrotizing fasciitis. The authors are from University of Ulsan and Seoul National University in South Korea.
Parameters:
(1) thickening of intermuscular deep fascia in mm on MRI
(2) number of compartments involved on MRI
(3) LRINEC score, from 0 to 13
Paramete
Finding
Points
thickening of fascia
< 3 mm
0
>= 3 mm
1.5
number of compartments
0 to 2
0
>= 3
2.5
LRINEC score
total score =
= SUM(points for all 3 parameters)
Interpretation:
• minimum score: 0
• maximum score: 17
Total Score
Risk of Necrotizing Fasciitis
0 to 4
low
4.5 to 6
intermediate
>= 6.5
high
Performance:
• The area under the ROC curve is 0.86 in the derivation and 0.93 in the validation cohorts.
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