Prenatal diagnosis of conjoined twins: four cases in a prenatal center.

Objective: To assess the findings in conjoined twins diagnosed prenatally.

Material And Methods: Between January 2002 and June 2009, we reviewed the database and medical records of 857 twin pregnancies, including 140 monochorionic twins. Nineteen monochorionic-monoamniotic twin pregnancies were detected, four of which were complicated by conjoined twins.