Two cases of multiple umbilical cord abnormalities resulting in stillbirth: prenatal observation with ultrasonography and fetal heart rates.

Two cases of multiple umbilical cord abnormalities consisting of three separate findings is presented. Both cases contained nuchal cords, knots, and umbilical cord thrombosis. One case had prenatal evidence of these findings by an ultrasonographic study videotaped at 32 weeks' gestation. When multiple umbilical cord abnormalities are diagnosed prenatally in the same fetus, that fetus should be considered to be at high risk; delivery should be considered at the least provocation.