RT Book, Section A1 Bissonnette, Bruno A1 Luginbuehl, Igor A1 Engelhardt, Thomas SR Print(0) ID 1164080362 T1 Noonan 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=1164080362 RD 2023/03/29 AB Part of group of RASopathies (mutations in the Ras/MAPK pathway) characterized by distinctive facial appearance, broad or webbed neck, low hairline in the back of the head, and short stature. Micrognathia, kyphosis and/or scoliosis, and cardiac defects (pulmonary valvular stenosis) are present. Other features include coagulation disorders, platelet deficiencies, mild mental retardation, and cryptorchidism in the first year of life.