TY - CHAP M1 - Book, Section TI - Micrognathia and Agnathia A1 - Bianchi, Diana W. A1 - Crombleholme, Timothy M. A1 - D'Alton, Mary E. A1 - Malone, Fergal D. PY - 2015 T2 - Fetology: Diagnosis and Management of the Fetal Patient, 2e AB - Key PointsFacial malformation characterized by mandibular hypoplasia and a small receding chin that fails to maintain the tongue in a forward position.Incidence is 1 in 1600 fetuses.Very high incidence of associated anomalies.Differential diagnosis includes Pierre Robin, Stickler, Treacher Collins, and Nager syndromes.Fetal karyotype, including FISH studies for DiGeorge syndrome, is indicated.DNA studies may be indicated if a syndrome is suspected.Delivery should occur in a tertiary center due to the potential for neonatal airway problems. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/20 UR - obgyn.mhmedical.com/content.aspx?aid=1106397134 ER -