RT Book, Section A1 Bissonnette, Bruno A1 Luginbuehl, Igor A1 Engelhardt, Thomas SR Print(0) ID 1164077258 T1 Lujan Fryns Syndrome T2 Syndromes: Rapid Recognition and Perioperative Implications, 2e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259861789 LK accessanesthesiology.mhmedical.com/content.aspx?aid=1164077258 RD 2024/04/24 AB Inherited syndrome with marfanoid features and X-linked mental retardation. It is characterized by mild-to-moderate mental retardation, marfanoid development, tall and thin stature with long and slender limbs. Other features include arachnodactyly, joint hyperextensibility, narrow face, small chin, large testes, hypotonia, and malformations of the brain and the heart. The association with an agenesis or partial development of the corpus callosum is present in more than 75% of affected individuals. The most common heart defects include spontaneous dilation of the aortic root with acute aortic valve insufficiency, dissection of the ascending aorta, and to a lesser degree ventricular and atrial septal defects.