Liver Shorts: Stopping immunosuppression after transplant, toxicity of acetaminophen at therapeutic dosing, best imaging of PSC

S Feng et al. Hepatology 2021; 73: 1985-2004. Efficacy and Safety of Immunosuppression Withdrawal in Pediatric Liver Transplant Recipients: Moving Toward Personalized Management. iWITH study found that in highly-selected patients (n=88), immunosuppression could be withdrawn in 38%. Criteria included consistently normal liver biochemistries, >4 years after transplantation, and transplants unrelated to autoimmune etiologies or HBV/HCV.

A Louvet et al. Hepatology 2021; 73: 1945-1955. Acute Liver Injury With Therapeutic Doses of Acetaminophen: A Prospective Study This prospective study (2002-2019) showed that 89 of 400 adult patients with acetaminophen-induced acute liver injury (ALI) had received therapeutic doses of acetaminophen (<6 g). Especially in individuals with underlying alcoholic liver disease or fasting, acetaminophen (more than 2 gm/day) can trigger liver injury.

JE Eaton et al. Hepatology 2021; 73: 1868-1881. Early Cholangiocarcinoma Detection With Magnetic Resonance Imaging Versus Ultrasound in Primary Sclerosing Cholangitis This multicenter retrospective study showed that MRI is superior to ultrasound for the detection of early-stage CCA in patients with PSC. Identification of CCA before the onset of symptoms with MRI is associated with improved outcomes. The authors note that individuals diagnosed with CCA while asymptomatic had a 36% reduction in 5-year mortality and that MRI allowed for a 77% reduction in 5-year mortality among asymptomatic persons. One important limitation of this study would be lead-time bias; that is, those with disease detected at an earlier stage will live longer than those detected at a later stage and thus earlier diagnosis may be ascribed as conferring a greater longevity even with no intervention.

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