INTRODUCTION
Improvements in fetal ultrasound have increased the number of congenital
ductus arteriosus aneurysm (DAA) reported in the last years, but
identifying high-risk aneurysms is today a challenge (1). In most
fetuses, DAA is an incidental finding during the third trimester, but
earlier diagnosis has been reported (2). The exact pathogenesis remains
unclear.
Most fetuses and neonates with DAA and no other associated complications
may be asymptomatic and follow a benign course with spontaneous
regression (3). However, potential complications may be severe,
including thrombosis, compression of adjacent structures, or spontaneous
DAA rupture (3). Thrombosis of DAA has been previously reported with
severe consequences (2, 4-7). Currently, management of ductus arteriosus
thrombosis in fetuses and neonates remains controversial, ranging from a
conservative to a surgical approach.