A rare severe and life-threatening genetic disease occurring during the neonatal period. The disease has characteristics of classical Marfan syndrome manifestations in addition to facial dysmorphism (megalocornea, iridodonesis, ectopia lentis, crumpled ears, loose redundant skin giving a ''senile'' facial appearance), flexion joint contractures, pulmonary emphysema and a severe, rapidly progressive cardiovascular disease (including ascending aortic dilatation and severe mitral and/or tricuspid valve insufficiency). Additionally, skeletal manifestations (arachnodactyly, dolichostenomelia, pectus deformities) are also associated. [from
SNOMEDCT_US]