Spontaneous perforation of choledochal cyst and hyperemesis gravidarum.

A 28-year-old primigravida at seven weeks gestation presented to the Accident & Emergency Department complaining of vomiting for five days. She was admitted and managed as a case of hyperemesis gravidarum. Two days later she developed abdominal distension. Ultrasound scan revealed ascites and common bile duct dilatation. The ascitic fluid was bile stained. At emergency laparotomy spontaneous perforation of the supraduodenal part of the common bile duct was seen. This was closed around a T-tube. She then underwent medical termination of pregnancy. The post-operative T-tube cholangiogram was suggestive of a type I choledochal cyst. Three months later this was excised and biliary enteric continuity restored by performing a hepaticojejunostomy. To the best of our knowledge, spontaneous rupture of a choledochal cyst in a patient of hyperemesis gravidarum has not been reported before. In this article, we discuss treatment options for choledochal cyst during pregnancy.