Postnatal management of prenatally diagnosed biliary cystic malformation

Hiromu Tanaka, Hideyuki Sasaki, Motoshi Wada, Tomoyuki Sato, Takuro Kazama, Kotaro Nishi, Hironori Kudo, Megumi Nakamura, Masaki Nio

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Purpose Recent advances in ultrasonography have increased prenatal diagnosis of biliary atresia (BA) and choledochal cyst (CC). These conditions are not easy to distinguish before or just after birth. This study investigated diagnostic and therapeutic problems in prenatal diagnosis of BA and CC. Methods We retrospectively studied clinical characteristics and progression of hepatobiliary cysts in 10 patients (4 cases of BA, 6 cases of CC) from the time of diagnosis. Chronological changes in cyst size and gallbladder morphology were assessed and measured sequentially by ultrasonography. Results Three cases of BA were type I cyst and 1 case was type III-d. All cases of CC were type Ia. Cyst size decreased between birth and surgery in BA but increased in CC. The gallbladder appeared atrophic in BA. There was no significant difference in gestational age or cyst size at prenatal diagnosis, changes in cyst size between birth and surgery, and degree of liver fibrosis. Conclusions BA should be suspected if cyst size decreases before and after birth and the gallbladder atrophies after birth. Cholangiography is the only reliable method to differentiate BA from CC. Neonatal surgery is indicated for CC with icterus and liver dysfunction.

Original languageEnglish
Pages (from-to)507-510
Number of pages4
JournalJournal of Pediatric Surgery
Issue number4
Publication statusPublished - 2015 Apr 1


  • Biliary atresia
  • Biliary cystic malformation
  • Choledochal cyst
  • Prenatal diagnosis

ASJC Scopus subject areas

  • Surgery
  • Pediatrics, Perinatology, and Child Health


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