Role of percutaneous transhepatic biliary drainage for managing bile lake formation after Kasai portoenterostomy.

PURPOSE

Bile lake (BL) formation following Kasai portoenterostomy (KPE) can complicate the prognosis of biliary atresia (BA). Percutaneous transhepatic biliary drainage (PTBD) performed under fluoroscopic/ultrasonographic (US) guidance is discussed for the management of BL.

METHODS

A retrospective review of 64 BA patients treated by KPE (open = 31, laparoscopic = 33) at a single center (2004-2023) identified 9 BL cases (9/64; 14.1%). PTBD was indicated for jaundice or cholangitis refractory to antibiotic therapy.

RESULTS

All BL were asymptomatic, diagnosed after an episode of postoperative cholangitis. KPE type was not correlated with BL incidence; 2/31 (6.5%) for open and 7/33 (21.2%) for laparoscopic; p = 0.15. Median onset was postoperative day 273 (IQR: 170-920). One case resolved with antibiotics while another case required early liver transplantation (LTx) due to advanced hepatic dysfunction unrelated to BL. All remaining cases (7/9) had PTBD at a median of 14.3 months (IQR: 7.3-34.7) post-KPE, with successful resolution in 6/7; one case required two PTBD procedures. Post-PTBD biliary peritonitis (n = 3) was resolved by abdominal lavage (laparoscopic = 2; open = 1).

CONCLUSION

Screening for BL is advisable in all postoperative BA patients especially when cholangitis occurs. Although the risk for biliary peritonitis warrants caution, PTBD seems a viable option for managing BL formation after KPE.