Pneumocystis jirovecii Pneumonia in Liver Transplant Recipients: A Systematic Review

BackgroundPneumocystis jirovecii is a fungus that causes pneumonia in immunocompromised patients, such as liver transplant recipients.MethodsWe searched the Medline database in September 2013 for articles referring to infections from P. jirovecii in liver transplant recipients, using the terms “liver transplantation” and “pneumocystis.” Our search yielded 60 articles, 35 of which were used for our review.ResultsP. jirovecii pneumonia (PJP) has an incidence of 1%–11% in liver transplant recipients without prophylaxis and mortality rates of 7%–88%. Most cases occur within the first 7 months after transplantation. When prophylactic treatment with oral trimethoprim-sulfamethoxazole is used, its incidence is only 0%–3%. The duration of its use varies from 3 months to 1 year after the liver transplantation.ConclusionsPJP has relatively high incidence and high mortality rates in liver transplant recipients without prophylactic treatment, which diminishes or even eliminates its occurrence. Therefore, oral trimethoprim-sulfamethoxazole should be used as prophylaxis for 1 year after the liver transplantation in this population.