title: Non-immune hydrops and superior vena cava syndrome due to diaphragmatic hernia in one twin.
abstract: BACKGROUND
  In a monochorionic twin gestation, hydrops in one fetus often results from placental transfusion, accompanied by intrauterine growth restriction (IUGR) of the non-hydropic fetus.
  
  
  METHODS
  A 35-year-old G11P9 presented with hydrops and IUGR of one of a monochorionic-diamniotic gestation. Extensive testing failed to reveal etiology for hydrops. The patient was delivered at 30 weeks gestation after non-reassuring fetal monitoring. The hydropic baby could not be adequately ventilated and expired in the early post-partum period. A diagnosis of superior vena cava syndrome and pulmonary hypoplasia secondary to right-sided congenital diaphragmatic hernia (CDH) was made neonatally.
  
  
  CONCLUSIONS
  Right-sided CDH can be difficult to diagnose by sonography at times because of the echogenic similarity of liver and lung, and may be suspected from signs of pericardial effusion and ascites.
authors.affiliation: Department of Obstetrics and Gynecology, Sloane Hospital for Women, Columbia University, New York, NY, USA.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Asmal
authors.forename: Mandhir
authors.initials: M
authors.lastname: Suri
authors.forename: Carrie B
authors.initials: CB
authors.lastname: Ruzal-Shapiro
authors.forename: Laxmi V
authors.initials: LV
authors.lastname: Baxi
mesh_terms: D000328:Adult; D004200:Diseases in Twins / Q000000981:diagnostic imaging / Q000209:etiology*; D005260:Female; D006548:Hernia, Diaphragmatic / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D015160:Hydrops Fetalis / Q000000981:diagnostic imaging / Q000209:etiology*; D007231:Infant, Newborn; D011247:Pregnancy; D013479:Superior Vena Cava Syndrome / Q000000981:diagnostic imaging / Q000209:etiology*; D014463:Ultrasonography