Liver-Spleen Volume Ratio as a Predictor of Native Liver Survival in Patients with Biliary Atresia

Background. The appropriate timing of liver transplantation (LT) in patients with biliary atre-sia (BA) who survived with their native livers until adolescence remains controversial. The liver -spleen volume ratio (LSR) has been reported to be efficacious in predicting the prognosis of chronic liver disease. We investigated whether LSR could predict long-term native liver progno-sis and serve as an indication for LT in patients with BA.Methods. Patients with BA who survived with their native liver until the age of 15 years were included. These patients were classified into 2 groups. The unfavorable prognosis group included patients who underwent or were awaiting LT or developed complications such as refractory chol-angitis or gastrointestinal bleeding due to esophagogastric or intestinal varices. The favorable prognosis group included patients who survived with their native liver without complications. We compared the 2 groups regarding LSR, hematological, and histologic data.Results. Of 19 patients, 8 were in the unfavorable prognosis group, and 11 were in the favor-able prognosis group. LSR was significantly lower in the unfavorable prognosis group (P = .009). Analysis of the receiver operating characteristic curve showed that the area under the curve of the LSR was 0.891, which was higher than the area under the curve of liver fibrosis markers. The optimal LSR cut-off value for predicting poor native liver prognosis was 1.97, with a sensitivity of 75.0% and a specificity of 87.5%.Conclusions. The LSR reflects splenomegaly and liver atrophy. The LSR might be a reliable predictor of native liver prognosis and could guide decisions about LT in patients with BA.