[Thrombosis of the umbilical vein].

Among 7,600 pregnancies between 1980 and 1985 five stillbirths were noted caused by umbilical vein thrombosis for an incidence of 1:1,500. Demonstration of a typical case. Umbilical vein thrombosis in gestation has previously been thought to be a fatal condition. In future chances of sufficiently well-timed intervention may be possible via closely meshed checkup controls with umbilical vein flow measurement.