# Partial quadrate lobectomy improves early outcomes of laparoscopic Kasai surgery in type III biliary atresia

## TL;DR

Removing part of the quadrate lobe during a specific liver surgery for biliary atresia improves early outcomes without increasing risks.

## Contribution

Partial quadrate lobectomy during laparoscopic Kasai surgery is shown to improve early outcomes in type III biliary atresia.

## Key findings

- Partial quadrate lobectomy reduced operation time and cholangitis incidence.
- Jaundice clearance rates were significantly higher in the lobectomy group at 6 and 12 months.
- No increase in intraoperative blood loss or adverse effects on one-year liver survival was observed.

## Abstract

To evaluate the early efficacy and safety of partial quadrate lobectomy during laparoscopic Kasai surgery for type III biliary atresia.

This retrospective study included 25 children diagnosed with type III biliary atresia, who underwent laparoscopic Kasai surgery between February 2018 and July 2022. Patients were divided into two groups: one with partial quadrate lobectomy and the other without. Data collected included age, gender, weight, incidence of cholangitis before and after surgery, one-year native liver survival, intraoperative blood loss, surgery duration, and jaundice clearance at 6 and 12 months. Follow-up results were compared between the groups.

The partial quadrate lobectomy group (14 patients) had a mean weight of 5.50 kg and average age of 66.79 days, while the control group (11 patients) had a similar weight (5.50 kg) and a mean age of 71.09 days. Weight comparison showed no significant difference (5.50 kg vs. 5.50 kg, P = 0.427). One-year postoperative native liver survival was 9/14 in the partial quadrate lobectomy group vs. 6/11 in the control group (P = 0.654).Intraoperative blood loss was similar between groups (P > 0.05), but the shorter operative time (301 vs. 347 min) associated with partial quadrate lobe resection may reduce anesthesia-related risks in infants, particularly given their limited physiological reserve. The reduced cholangitis rate (29% vs. 73%) aligns with prior reports suggesting that improved hilar exposure facilitates more precise dissection of fibrotic remnants, potentially minimizing postoperative bile stasis and infection. Jaundice clearance (defined as TBIL <20 μmol/L) was achieved in 8/14 (57.1%) of the partial quadrate lobectomy group vs. 3/11 (27.3%) in the control group at 6 months (P = 0.025), and 10/14 (71.4%) vs. 4/11 (36.4%) at 12 months (P = 0.031). The lower TBIL levels (5.11 vs. 9.67 mg/dl) at 6 months suggest enhanced bile drainage efficacy, which is critical for delaying or avoiding liver transplantation in this population.

Partial quadrate lobectomy during laparoscopic Kasai surgery reduces operation time, lowers cholangitis incidence, and improves jaundice clearance rates without increasing intraoperative blood loss or adversely affecting one-year native liver survival. It is a safe and feasible adjunct to improve early postoperative outcomes.