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  • Title: Tuberculosis in liver transplant recipients: experience of a South Indian liver transplant center.
    Author: Olithselvan A, Rajagopala S, Vij M, Shanmugam V, Shanmugam N, Rela M.
    Journal: Liver Transpl; 2014 Aug; 20(8):960-6. PubMed ID: 24789170.
    Abstract:
    Tuberculosis (TB) is a serious disease for liver transplant recipients (LTRs). Data on post-liver transplant TB from high-burden countries are scant. The aims of this study were to describe the prevalence of TB in LTRs from a high-prevalence area and to analyze the risk factors for the development of post-liver transplant TB. We performed a retrospective review of our database and a case-control study of identified cases with TB and age-matched LTRs without TB. The overall prevalence of TB in LTRs was comparable to the prevalence of TB in LTRs from low-prevalence countries (5/214 or 2.3%). A low rate of interferon-γ release assay (IGRA) testing before liver transplantation was observed (68/214 or 31%). Most patients were screened clinically and with chest radiography alone before transplantation. TB developed variably after transplantation [median = 72 days, interquartile range (IQR) = 534 days]. The presentation was mostly extrapulmonary and/or disseminated (4/5 or 80%). When cases with posttransplant TB were compared with matched healthy LTRs, the presence of unexplained granulomas in explants (2/5 or 40%, P = 0.01) was the only factor associated with the development of TB. When all explants showing granulomas were reviewed, TB (52.9%) remained the most common cause; however, in almost half (47.1%), other attributable causes were found. Patients were treated with a standard daily regimen for a median of 12 months (IQR = 7.5 months). Posttransplant TB was associated with a high mortality rate (2/5 or 40%). In conclusion, we observed a low prevalence of TB in LTRs from a high-prevalence region. The presence of granulomas suggestive of TB in liver explants warrants isoniazid prophylaxis in the absence of disease. Post-liver transplant TB is associated with a high mortality rate. The roles of routine IGRA testing and isoniazid prophylaxis in a high-prevalence setting urgently need to be studied.
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