In absence of a family history: |
(1) Z -score for the aortic diameter at the sinuses of valva ≥ 2 or aortic root dissection AND ectopia lentis |
(2) Z -score for the aortic diameter at the sinuses of valva ≥ 2 or aortic root dissection AND fibrillin-1 mutation |
(3) Z -score for the aortic diameter at the sinuses of valva ≥ 2 or aortic root dissection AND Systemic score ≥7* |
(4) ectopia lentis AND fibrillin-1 mutation AND aortic aneurysm |
In the presence of a family history: |
(5) ectopia lentis AND family history of Marfan syndrome (see 1–4) |
(6) Systemic score ≥7 AND family history of Marfan syndrome (see 1–4)* |
(7) Z -score for the aortic diameter at the sinuses of valva ≥ 2 (above 20 years old) or ≥3 in those below 20 years old) AND family history of Marfan syndrome* |
*In the absence of discriminating features other syndromes. |
Systemic score |
• Wrist AND thumb sign – 3 (Wrist OR thumb sign – 1) |
• Pectus carinatum deformity – 2 (pectus excavatum or chest asymmetry – 1) |
• Hind foot deformity – 2 (plain pes planus – 1) |
• Pneumothorax – 2 |
• Dural ectasia – 2 |
• Protrusio acetabuli – 2 |
• Reduced US/LS AND increased arm/height AND no severe scoliosis – 1 |
• Scoliosis or thoracolumbar kyphosis – 1 |
• Reduced elbow extension – 1 |
• Facial features (3/5) – 1 (dolichocephaly, enophtalmos, downslanting palpebral fissures, malar hyoplasia, retrognathia) |
• Skin striae – 1 |
• Myopia >3 diopters – 1 |
• Mitral valve prolapse (all types) – 1 |
Maximum total: 20 points; score ≥7 indicates systemic involvement |