Classification | Size of coronary artery abnormality* |
No coronary involvement | Z-score always <2 and no more than a 0.9 decrease in Z-score during follow-up |
Dilation only | Z-score 2 to <2.5 or if initially <2, a ≥1 decrease in Z-score during follow-up¶ |
Small aneurysm | Z-score ≥2.5 to <5 |
Medium aneurysm | Z-score of ≥5 to <10 and absolute dimension <8 mm |
Large aneurysm or giant aneurysm | Z-score ≥10 or absolute dimension ≥8 mm |
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