fetal choledochal cyst

Fetal choledochal cysts  are choledochal cysts diagnosed in utero.

Epidemiology

The estimated incidence rate of choledochal cysts is  ~1 in 2 million live births . There is a recognsed female predilection and a greater occurrence in Asian populations.

Radiographic features

Antenatal ultrasound

It may be seen as an anechoic fetal intra-abdominal cyst within or close to the fetal liver.

Demonstration of continuity with the fetal gall bladder or hepatic ducts or presence of associated intra- and extrahepatic ducts may further aid the diagnosis.

Treatment and prognosis

Surgical excision with a Roux-en-Y hepaticojejunostomy anastomosis is often performed postpartum as part of management.

Differential diagnosis

On ultrasound, the main differential considerations for the cyst within the adjacent to the liver include

• normal fetal gallbladder
• umbilical venous varix: has color flow
• cystic biliary atresia

See also

• fetal intra-abdominal cysts

Siehe auch:

• fetale intraabdominelle Zysten
• Nabelvenenaneurysma

und weiter:

• Duodenalatresie