title: [Giant sacrococcygeal teratoma in twin pregnancy].
abstract: Sacrococcygeal teratoma tumors are more frequent in infants alive. It is characterized by its benign histology in the majority of the cases diagnosed prenatally; it is necessary to follow narrow to prevent neonatal complications that can lead to urinary tract complications and fecal, high-output heart failure, hydrops and, in extreme cases, the death of the fetus.
  
  
  METHODS
  Primigravidae 30 years old, with gestation twins, bicorial, biamniotic in the first trimester of pregnancy to one of the twins is diagnosed sacrococcygeus teratoma giant, with favorable monitoring in the maternal-fetal Medicine Unit of the University Hospital of La Paz in Madrid, and with postnatal resection surgery successful. We review the diagnostic procedures and treatment of this tumor in unique and twin gestations.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Abascal-Saiz
authors.forename: María
authors.initials: M
authors.lastname: De la Calle
authors.forename: Beatriz
authors.initials: B
authors.lastname: Herrero
authors.forename: Roberto
authors.initials: R
authors.lastname: Rodríguez
authors.forename: Eugenia
authors.initials: E
authors.lastname: Antolín
authors.forename: Jose Luis
authors.initials: JL
authors.lastname: Bertha
mesh_terms: D000328:Adult; D004200:Diseases in Twins / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D059285:Pregnancy, Twin; D012445:Sacrococcygeal Region; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D013724:Teratoma / Q000175:diagnosis* / Q000601:surgery