Two cases: of bilateral congenital diaphragmatic hernia (CDH) followed by f
etal ultrasonography were described. Although many cases of CDH are diagnos
ed by fetal ultrasonography, it is difficult to diagnose bilateral CDH in u
tero, which is a relatively rare and fatal condition. Two fetuses were diag
nosed as having left CDH associated with severe anomalies. However, a retro
spective review of fetal ultrasonography indicated elevation of the liver i
n the right posterior chest. Both patients died shortly after surgical repa
ir for left CDH despite the use of extracorporeal membrane oxygenation. Dia
gnosis of bilateral CDH by fetal ultrasonography and the evaluation of its
prognosis were discussed. Copyright (C) 2001 S. Karger AG, Basel.