TY - CHAP M1 - Book, Section TI - Sacrococcygeal Teratoma 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 PointsSacrococcygeal teratomas (SCTs) arise from a totipotent stem cell in Henson’s node.Most SCTs are large, complex, solid, and cystic masses but may have intrapelvic or intra-abdominal extension.Ultrasound alone will make the diagnosis, but fetal MRI will help define anatomic relations, and echocardiographs will evaluate high-output state.SCTs that are >10 cm, solid, highly vascular, or rapidly growing are at highest riskfor hydrops.Fetal surgery may be an option in cases that develop early signs of hydrops.Cesarean section is usually indicated for large SCTs due to risk of rupture and exsanguination.SCTs are usually benign but can have immature elements or rests of malignant yolk sac tumor.Close serial follow-up for at least 3 months for tumor recurrence is indicated with serial α-fetoprotein levels, physical exam, and imaging studies. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/14 UR - obgyn.mhmedical.com/content.aspx?aid=1106401105 ER -