PRENATAL-DIAGNOSIS OF RENAL AGENESIS IN A TWIN GESTATION

Bilateral renal agenesis is a lethal congenital anomaly. It appears to be transmitted in a polygenic pattern. The prenatal ultrasound findin gs consist of severe oligohydramnios, absence of the fetal bladder, an d failure to identify fetal kidneys. Twin gestations with renal agenes is have been described in the paediatric literature. We detail a case of a patient with two prior affected pregnancies with bilateral renal agenesis. Her latest pregancy was diagnosed prenatally, with one fetus with bilateral and the other fetus with unilateral renal agenesis. Th e ultrasound findings should be differentiated from the stuck twin phe nomenon.