Another "double bubble" sign or "double bladder" sign: fetal intra-abdominal umbilical vein varix.

Abstract

Fetal intra-abdominal umbilical vein varix increases the incidence of fetal/neonatal morbidity and mortality. Its early diagnosis may be clinically important. For a case of this disorder, we have proposed the new name of "double bladder" sign; "another double bubble" sign may also illustrate this disorder.