Vanishing twin, natures choice.

ABSTRACT

A surprising finding at emergency Caesarean Section of an empty sac, along with fetus & placenta , was observed. Retrospectively, when USG reports were reviewed it was a case of Vanishing Twin after 20 wks of gestation. This syndrome is diagnosed more frequently since the use of USG has become a common investigation. Probably the twin which vanishes may be chromosomally abnormal. Prognosis of the surviving twin is generally excellent but depends on the etiology of the death of the dead twin.