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1.
Bin Liu Yangzhong Wang Yuanyuan Zhao Huibo Shi Fanjun Zeng Zhishui Chen 《American journal of transplantation》2020,20(7):1891-1895
Coronavirus disease 2019 (COVID‐19) pandemic spreads rapidly and may be an increasing challenge for transplant community. Clinical data on COVID‐19 infection in transplant population is very limited. Herein we presented the clinical course and outcome of a 50‐year‐old male post liver transplantation who contracted COVID‐19, with subsequent infection of his wife. The process of illness was representative. A therapeutic regime with temporary immunosuppression withdrawal and systemic low‐dose corticosteroid as principle was involved in the management of the patient which made him recover from severe COVID‐19 pneumonia. 相似文献
2.
Muhammad Baraa Hammami Brian Garibaldi Pali Shah Gigi Liu Tania Jain Po‐Hung Chen Amy K. Kim Edina Avdic Brent Petty Sara Strout Derek M. Fine Ashwini Niranjan‐Azadi William M. Garneau Andrew M. Cameron Jose M. Monroy Trujillo Ahmet Gurakar Robin Avery 《American journal of transplantation》2020,20(8):2254-2259
The novel coronavirus disease 2019 (COVID‐19) is a highly infectious and rapidly spreading disease. There are limited published data on the epidemiology and outcomes of COVID‐19 infection among organ transplant recipients. After initial flulike symptoms, progression to an inflammatory phase may occur, characterized by cytokine release rapidly leading to respiratory and multiorgan failure. We report the clinical course and management of a liver transplant recipient on hemodialysis, who presented with COVID‐19 pneumonia, and despite completing a 5‐day course of hydroxychloroquine, later developed marked inflammatory manifestations with rapid improvement after administration of off‐label, single‐dose tocilizumab. We also highlight the role of lung ultrasonography in early diagnosis of the inflammatory phase of COVID‐19. Future investigation of the effects of immunomodulators among transplant recipients with COVID‐19 infection will be important. 相似文献
3.
Fatal outcome after reactivation of inherited chromosomally integrated HHV‐6A (iciHHV‐6A) transmitted through liver transplantation 下载免费PDF全文
P. Bonnafous J. Marlet D. Bouvet E. Salamé A.‐C. Tellier S. Guyetant A. Goudeau H. Agut A. Gautheret‐Dejean C. Gaudy‐Graffin 《American journal of transplantation》2018,18(6):1548-1551
HHV‐6A and HHV‐6B are found as inherited and chromosomally integrated forms (iciHHV‐6A and ‐6B) into all germinal and somatic cells and vertically transmitted in a Mendelian manner in about 1% of the population. They were occasionally shown to be horizontally transmitted through hematopoietic stem cell transplantation. Here, we present a clinical case of horizontal transmission of iciHHV‐6A from donor to recipient through liver transplantation. Molecular analysis performed on three viral genes (7.2 kb) in the recipient and donor samples supports transmission of iciHHV‐6A from the graft. Transmission was followed by reactivation, with high viral loads in several compartments. The infection was uncontrollable, leading to severe disease and death, despite antiviral treatments and the absence of resistance mutations. This case highlights the fact that physicians should be aware of the possible horizontal transmission of iciHHV‐6 and its consequences in case of reactivation in immunocompromised patients. 相似文献
4.
Rachel Bush Felicia Johns Ratna Acharya Kiran Upadhyay 《American journal of transplantation》2020,20(10):2942-2945
As of mid‐April 2020, the coronavirus disease of 2019 (COVID‐19) pandemic has affected more than 2 million people and caused 135 000 deaths worldwide. Not much is known about the effect of this disease in immunosuppressed children with renal transplantation (RT). Here we report a 13‐year‐old child with multiple comorbidities who acquired COVID‐19 5 years post‐RT in the United States. Maintenance immunosuppression (IS) consisted of sirolimus and mycophenolate. There was no history of travel or exposure to sick contacts. The presenting features were fever, cough, rhinorrhea, and hypoxemia. Diarrhea was the only extrapulmonary manifestation. Chest X‐ray was normal. He did not require intensive care unit care or ventilation. There was a transient rise in his serum creatinine without change in urine output; dialysis was not required. Slight reduction in IS was done. He had an excellent clinical recovery within 4 days and was able to be discharged home. His respiratory symptoms resolved but the diarrhea persisted during a 4‐week follow‐up period. This report provides a brief perspective on the short‐term COVID‐19 clinical course in an immunosuppressed child. More reports will add valuable information on the potential variety of spectrum of the illness in this subset of children. 相似文献
5.
Emanuele Cozzi Eleonora Faccioli Serena Marinello Monica Loy Sabrina Congedi Fiorella Calabrese Micaela Romagnoli Anna M. Cattelan Federico Rea 《American journal of transplantation》2020,20(10):2933-2937
Coronavirus disease 2019 (COVID‐19) has been declared pandemic since March 2020. In Europe, Italy was the first nation affected by this infection. We report anamnestic data, clinical features, and therapeutic management of 2 lung transplant recipients with confirmed COVID‐19 pneumonia. Both patients were in good clinical condition before the infection and were receiving immunosuppression with calcineurin inhibitors (CNI), mycophenolate mofetil, and corticosteroids. Whereas mycophenolate mofetil was withdrawn in both cases, CNI were suspended only in the second patient. The first patient always maintained excellent oxygen saturation throughout hospitalization with no need for additional oxygen therapy. He was discharged with a satisfactory pulmonary function and a complete resolution of radiological and clinical findings. However, at discharge SARS‐CoV‐2 RNA could still be detected in the nasopharyngeal swab and in the stools. The second patient required mechanical ventilation, had a progressive deterioration of his clinical conditions, and had a fatal outcome. Further insight into SARS‐CoV‐2 infection is eagerly awaited to improve the outcome of transplant recipients affected by COVID‐19 pneumonia. 相似文献
6.
Vinay Nair Nicholas Jandovitz Jamie S. Hirsch Gayatri Nair Mersema Abate Madhu Bhaskaran Elliot Grodstein Ilan Berlinrut David Hirschwerk Stuart L. Cohen Karina W. Davidson Andrew J. Dominello Gabrielle A. Osorio Safiya Richardson Lewis W. Teperman Ernesto P. Molmenti 《American journal of transplantation》2020,20(7):1819-1825
There is minimal information on coronavirus disease 2019 (COVID‐19) in immunocompromised individuals. We have studied 10 patients treated at 12 adult care hospitals. Ten kidney transplant recipients tested positive for severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) by polymerase chain reaction, and 9 were admitted. The median age was 57 (interquartile range [IQR] 47‐67), 60% were male, 40% Caucasian, and 30% Black/African American. Median time from transplant to COVID‐19 testing was 2822 days (IQR 1272‐4592). The most common symptom was fever, followed by cough, myalgia, chills, and fatigue. The most common chest X‐ray and computed tomography abnormality was multifocal patchy opacities. Three patients had no abnormal findings. Leukopenia was seen in 20% of patients, and allograft function was stable in 50% of patients. Nine patients were on tacrolimus and a mycophenolic antimetabolite, and 70% were on prednisone. Hospitalized patients had their antimetabolite agent stopped. All hospitalized patients received hydroxychloroquine and azithromycin. Three patients died (30%), and 5 (50%) developed acute kidney injury. Kidney transplant recipients infected with COVID‐19 should be monitored closely in the setting of lowered immunosuppression. Most individuals required hospitalization and presenting symptoms were similar to those of nontransplant individuals. 相似文献
7.
Jeffrey J. Hsu Pryce Gaynor Megan Kamath Ashley Fan Farah Al‐Saffar Daniel Cruz Ali Nsair 《American journal of transplantation》2020,20(7):1911-1915
The severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) is rapidly infecting people worldwide, resulting in the infectious disease coronavirus disease 19 (COVID‐19) that has been declared a pandemic. Much remains unknown about COVID‐19, including its effects on solid organ transplant (SOT) recipients. Given their immunosuppressed state, SOT recipients are presumed to be at high risk of complications with viral infections such as SARS‐CoV‐2. Limited case reports in single SOT recipients, however, have not suggested a particularly severe course in this population. In this report, we present a dual‐organ (heart/kidney) transplant recipient who was found to have COVID‐19 and, despite the presence of a number of risk factors for poor outcomes, had a relatively mild clinical course. 相似文献
8.
Francesco Fontana Gaetano Alfano Giacomo Mori Alessio Amurri Lorenzo Tei Marco Ballestri Marco Leonelli Francesca Facchini Francesca Damiano Riccardo Magistroni Gianni Cappelli 《American journal of transplantation》2020,20(7):1902-1906
Coronavirus disease 2019 (COVID‐19) pneumonia has been poorly reported in solid organ transplanted patients; prognosis is uncertain and best management unclear. We describe the case of a 61‐year‐old kidney transplant recipient with several comorbidities who was hospitalized and later received a diagnosis of COVID‐19 pneumonia; the infection was successfully managed with the use of hydroxychloroquine and a single administration of tocilizumab, after immunosuppression reduction; the patient did not require mechanical ventilation. During the rapid spread of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) pandemic, transplant clinicians should be readily informed about new cases of COVID‐19 pneumonia in solid organ transplant recipients, with focus on therapeutic strategies employed and their outcome. 相似文献
9.
Aránzazu Caballero-Marcos Magdalena Salcedo Roberto Alonso-Fernández Manuel Rodríguez-Perálvarez María Olmedo Javier Graus Morales Valentín Cuervas-Mons Alba Cachero Carmelo Loinaz-Segurola Mercedes Iñarrairaegui Lluís Castells Sonia Pascual Carmen Vinaixa-Aunés Rocío González-Grande Alejandra Otero Santiago Tomé Javier Tejedor-Tejada José María Álamo-Martínez Luisa González-Diéguez Flor Nogueras-Lopez Gerardo Blanco-Fernández Gema Muñoz-Bartolo Francisco Javier Bustamante Emilio Fábrega Mario Romero-Cristóbal Rosa Martin-Mateos Julia Del Rio-Izquierdo Ana Arias-Milla Laura Calatayud Alberto A. Marcacuzco-Quinto Víctor Fernández-Alonso Concepción Gómez-Gavara Jordi Colmenero Patricia Muñoz José A. Pons the Spanish Society of Liver Transplantation 《American journal of transplantation》2021,21(8):2876-2884
The protective capacity and duration of humoral immunity after SARS-CoV-2 infection are not yet understood in solid organ transplant recipients. A prospective multicenter study was performed to evaluate the persistence of anti-nucleocapsid IgG antibodies in liver transplant recipients 6 months after coronavirus disease 2019 (COVID-19) resolution. A total of 71 liver transplant recipients were matched with 71 immunocompetent controls by a propensity score including variables with a well-known prognostic impact in COVID-19. Paired case–control serological data were also available in 62 liver transplant patients and 62 controls at month 3 after COVID-19. Liver transplant recipients showed a lower incidence of anti-nucleocapsid IgG antibodies at 3 months (77.4% vs. 100%, p < .001) and at 6 months (63.4% vs. 90.1%, p < .001). Lower levels of antibodies were also observed in liver transplant patients at 3 (p = .001) and 6 months (p < .001) after COVID-19. In transplant patients, female gender (OR = 13.49, 95% CI: 2.17–83.8), a longer interval since transplantation (OR = 1.19, 95% CI: 1.03–1.36), and therapy with renin–angiotensin–aldosterone system inhibitors (OR = 7.11, 95% CI: 1.47–34.50) were independently associated with persistence of antibodies beyond 6 months after COVID-19. Therefore, as compared with immunocompetent patients, liver transplant recipients show a lower prevalence of anti-SARS-CoV-2 antibodies and more pronounced antibody levels decline. 相似文献
10.
Yaerim Kim Ohyun Kwon Jin H. Paek Woo Y. Park Kyubok Jin Miri Hyun Ji Y. Lee Hyun A. Kim Seungyeup Han 《American journal of transplantation》2020,20(8):2269-2275
The fatality of novel coronavirus disease 2019 (COVID‐19) is precipitously increased in patients with underlying comorbidities or elderly people. Kidney transplant (KT) recipients are one of the vulnerable populations for infection. COVID‐19 infection in KT recipients might be a complicated and awkward situation, but there has been a lack of reports concerning this group. Herein, we demonstrated two distinct cases with different clinical progress. The first case was a 36‐year‐old man who underwent KT 3 years ago. He was diagnosed with COVID‐19 expressing relevant symptoms. Following administration of lopinavir/ritonavir and hydroxychloroquine with reduced immunosuppressant, he recovered from COVID‐19. However, the unexpected fluctuations in tacrolimus trough levels needed to be managed because of drug‐to‐drug interaction. The second case was developed in a 56‐year‐old man without any symptoms. He received a second KT from an ABO‐incompatible donor 8 years ago. He was diagnosed with COVID‐19 by screening due to exposure history. During the hospitalization period, the chest infiltrative lesion showed a wax and wane, but he successfully recovered by administration of hydroxychloroquine with azithromycin. These apparently different cases suggest that assertive screening and management could improve the clinical course. In addition, antiviral agents should be used cautiously, especially in patients on calcineurin inhibitors. 相似文献
11.
Marta Crespo María J. Prez‐Sez Dolores Redondo‐Pachn Laura Llins‐Mallol María M. Montero Judith Villar‐García Carlos Arias‐Cabrales Anna Buxeda Carla Burballa Susana Vzquez Thais Lpez Ftima Moreno Marisa Mir Sara Outn Adriana Sierra Silvia Collado Clara Barrios Eva Rodríguez Laia Sans Francesc Barbosa Higini Cao María D. Arenas Roberto Güerri‐Fernndez Juan P. Horcajada Julio Pascual 《American journal of transplantation》2020,20(10):2883-2889
The SARS‐Cov‐2 infection disease (COVID‐19) pandemic has posed at risk the kidney transplant (KT) population, particularly the elderly recipients. From March 12 until April 4, 2020, we diagnosed COVID‐19 in 16 of our 324 KT patients aged ≥65 years old (4.9%). Many of them had had contact with healthcare facilities in the month prior to infection. Median time of symptom onset to admission was 7 days. All presented with fever and all but one with pneumonia. Up to 33% showed renal graft dysfunction. At infection diagnosis, mTOR inhibitors or mycophenolate were withdrawn. Tacrolimus was withdrawn in 70%. The main treatment combination was hydroxychloroquine and azithromycin. A subset of patients was treated with anti‐retroviral and tocilizumab. Short‐term fatality rate was 50% at a median time since admission of 3 days. Those who died were more frequently obese, frail, and had underlying heart disease. Although a higher respiratory rate was observed at admission in nonsurvivors, symptoms at presentation were similar between both groups. Patients who died were more anemic, lymphopenic, and showed higher D‐dimer, C‐reactive protein, and IL‐6 at their first tests. COVID‐19 is frequent among the elderly KT population and associates a very early and high mortality rate. 相似文献
12.
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Marcus R. Pereira Sumit Mohan David J. Cohen Syed A. Husain Geoffrey K. Dube Lloyd E. Ratner Selim Arcasoy Meghan M. Aversa Luke J. Benvenuto Darshana M. Dadhania Sandip Kapur Lorna M. Dove Robert S. Brown Russell E. Rosenblatt Benjamin Samstein Nir Uriel Maryjane A. Farr Michael Satlin Catherine B. Small Thomas J. Walsh Rosy P. Kodiyanplakkal Benjamin A. Miko Justin G. Aaron Demetra S. Tsapepas Jean C. Emond Elizabeth C. Verna 《American journal of transplantation》2020,20(7):1800-1808
Solid organ transplant recipients may be at a high risk for SARS‐CoV‐2 infection and poor associated outcomes. We herein report our initial experience with solid organ transplant recipients with SARS‐CoV‐2 infection at two centers during the first 3 weeks of the outbreak in New York City. Baseline characteristics, clinical presentation, antiviral and immunosuppressive management were compared between patients with mild/moderate and severe disease (defined as ICU admission, intubation or death). Ninety patients were analyzed with a median age of 57 years. Forty‐six were kidney recipients, 17 lung, 13 liver, 9 heart, and 5 dual‐organ transplants. The most common presenting symptoms were fever (70%), cough (59%), and dyspnea (43%). Twenty‐two (24%) had mild, 41 (46%) moderate, and 27 (30%) severe disease. Among the 68 hospitalized patients, 12% required non‐rebreather and 35% required intubation. 91% received hydroxychloroquine, 66% azithromycin, 3% remdesivir, 21% tocilizumab, and 24% bolus steroids. Sixteen patients died (18% overall, 24% of hospitalized, 52% of ICU) and 37 (54%) were discharged. In this initial cohort, transplant recipients with COVID‐19 appear to have more severe outcomes, although testing limitations likely led to undercounting of mild/asymptomatic cases. As this outbreak unfolds, COVID‐19 has the potential to severely impact solid organ transplant recipients. 相似文献
14.
Shaun S. C. Ho Nancy Nashid Valerie J. Waters John J. LiPuma James E. A. Zlosnik Anthony Otley Gino R. Somers Binita M. Kamath Yvonne C. W. Yau 《American journal of transplantation》2019,19(3):933-938
“Cepacia syndrome”, caused by Burkholderia cepacia complex and often associated with cystic fibrosis, carries a high mortality rate. It is rare for Burkholderia multivorans, a species within the B. cepacia complex, to cause cepacia syndrome even among patients with cystic fibrosis. This is the first reported fatal case of cepacia syndrome caused by B. multivorans occurring in a pediatric liver transplant recipient who does not have cystic fibrosis. We describe the unique characteristics of this pathogen among the non–cystic fibrosis population and the importance of early recognition and treatment. 相似文献
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16.
Soufian Meziyerh Tom C. Zwart Ronald W. van Etten Jeroen A. Janson Teun van Gelder Ian P. J. Alwayn Johan W. de Fijter Marlies E. J. Reinders Dirk J. A. R. Moes Aiko P. J. de Vries 《American journal of transplantation》2020,20(7):1896-1901
The current coronavirus disease 2019 (COVID‐19) pandemic requires extra attention for immunocompromised patients, including solid organ transplant recipients. We report on a case of a 35‐year‐old renal transplant recipient who suffered from a severe COVID‐19 pneumonia. The clinical course was complicated by extreme overexposure to the mammalian target of rapamycin inhibitor everolimus, following coadministration of chloroquine and lopinavir/ritonavir therapy. The case is illustrative for dilemmas that transplant professionals may face in the absence of evidence‐based COVID‐19 therapy and concurrent pressure for exploration of experimental pharmacological treatment options. However, the risk‐benefit balance of experimental or off‐label therapy may be weighed differently in organ transplant recipients than in otherwise healthy COVID‐19 patients, owing to their immunocompromised status and potential drug interactions with immunosuppressive therapy. With this case report, we aimed to achieve increased awareness and improved management of drug‐drug interactions associated with the various treatment options for COVID‐19 in renal transplant patients. 相似文献
17.
Luise Holzhauser Laura Lourenco Nitasha Sarswat Gene Kim Ben Chung Ann B. Nguyen 《American journal of transplantation》2020,20(10):2916-2922
The coronavirus disease 2019 (COVID‐19) pandemic poses special challenges to immunocompromised transplant patients. Given the paucity of proven data in treating COVID‐19, management of these patients is difficult, rapidly evolving, and mainly based on anecdotal experience. We report 2 cases of heart transplant (HT) recipients with COVID‐19. The first is a 59‐year‐old female with HT in 2012 who presented on March 20, 2020 with fever, hypoxia, and ground‐glass opacities on chest X‐ray. She quickly progressed to acute hypoxic respiratory failure and vasoplegic shock. Despite reduction in immunosuppression and treatment with tocilizumab, intravenous immunoglobulin, hydroxychloroquine, lopinavir/ritonavir, and broad‐spectrum antibiotics, she ultimately died from multiorgan failure. The second case is a 75‐year‐old man with HT in 2000 who presented on April 2, 2020 after curbside testing revealed positive COVID‐19. Given a milder presentation compared to the first patient, antimetabolite was discontinued and only hydroxychloroquine was started. Because of a lack of clinical improvement several days later, tocilizumab, methylprednisolone, and therapeutic anticoagulation were initiated. The patient clinically improved with decreasing oxygen requirements and was discharged home. These 2 cases highlight the wide range of different presentations of COVID‐19 in HT recipients and the rapidity with which the management of these patients is evolving. 相似文献
18.
Abraham Shaked Michele R. DesMarais Heather Kopetskie Sandy Feng Jeffrey D. Punch Josh Levitsky Jorge Reyes Goran B. Klintmalm Anthony J. Demetris Bryna E. Burrell Allison Priore Nancy D. Bridges Peter H. Sayre 《American journal of transplantation》2019,19(5):1397-1409
The Immune Tolerance Network ITN030ST A‐WISH assessed immunosuppression withdrawal in liver transplant recipients with hepatitis C or nonimmune nonviral liver disease. Of 275 recipients enrolled before transplantation, 95 were randomly assigned 4:1 to withdrawal (n = 77) or maintenance (n = 18) 1‐ to 2‐years posttransplant. Randomization eligibility criteria included stable immunosuppression monotherapy; adequate liver and kidney function; ≤Stage 2 Ishak fibrosis; and absence of rejection on biopsy. Immunosuppression withdrawal followed an 8‐step reduction algorithm with ≥8 weeks per level. Fifty‐two of 77 subjects (67.5%) reduced to ≤50% of baseline dose, and 10 of 77 (13.0%) discontinued all immunosuppression for ≥1 year. Acute rejection and/or abnormal liver tests were treated with increased immunosuppression; 5 of 32 rejection episodes required a methylprednisolone bolus. The composite end point (death or graft loss; grade 4 secondary malignancy or opportunistic infection; Ishak stage ≥3; or >25% decrease in glomerular filtration rate within 24 months of randomization) occurred in 12 of 66 (18%) and 4 of 13 (31%) subjects in the withdrawal and maintenance groups. Early immunosuppression minimization is feasible in selected liver recipients, while complete withdrawal is successful in only a small proportion. The composite end point comparison was inconclusive for noninferiority of the withdrawal to the maintenance group. 相似文献
19.
Immune‐mediated graft dysfunction in liver transplant recipients with hepatitis C virus treated with direct‐acting antiviral therapy 下载免费PDF全文
Christine Chan Thomas Schiano Eliana Agudelo John Paul Haydek Maarouf Hoteit Marcela P. Laurito John P. Norvell Norah Terrault Elizabeth C. Verna Amy Yang Josh Levitsky 《American journal of transplantation》2018,18(10):2506-2512
Interferon treatment of hepatitis C virus (HCV) infection after liver transplantation (LT) can result in immune‐mediated graft dysfunction (IGD). The occurrence of, risk factors for, and outcomes of IGD with direct‐acting antiviral (DAA) therapy have not been reported. We conducted a multicenter study of HCV+LT recipients who did or did not develop DAA‐IGD (1 case: 2 controls—33 vs 66). Among all treated between 2014 and 2016, DAA‐IGD occurred in 3.4% (33/978). IGD occurred only after treatment completion (76.0 [IQR, 47.0;176]). Among those treated, 48% had plasma cell hepatitis, 36% acute cellular rejection, 6% chronic rejection, and 9% combined findings. Median time to liver enzyme resolution was 77.5 days (IQR, 31.5;126). After diagnosis, hospitalizations, steroid‐induced hyperglycemia, and infection occurred in a higher percentage of cases vs controls (33% vs 7.5%, 21% vs 1.5%, 9% vs 0%; all P < .05). Only one IGD patient died and none required retransplant. A multivariate regression analysis found that liver enzyme elevations during and soon after DAA therapy completion correlated with subsequent IGD. In conclusion, while DAA‐IGD is uncommon, liver enzyme elevations during or after DAA therapy may be a sign of impending IGD. These indicators should guide clinicians to diagnose and treat IGD early before the more deleterious later clinical presentation. 相似文献
20.
Domitille Erard‐Poinsot Caroline Scholtès Claire Billoud Fabien Zoulim Jérôme Dumortier 《American journal of transplantation》2018,18(10):2587-2590
Late relapse of hepatitis C virus (HCV) infection is very rare in the era of modern direct‐acting antiviral therapy. We report here the first case of a late relapse, after direct‐acting antiviral therapy, occurring immediately after liver transplant (LT), with 93 weeks of sustained virologic response before LT. HCV RNA in serum and in liver biopsy was negative the day of LT, and relapse was diagnosed 11 days after LT. HCV NS5A sequencing was performed on samples before and after LT, with 99% of homology demonstrating a true late relapse rather than a reinfection. This late relapse could be explained by extrahepatic reservoirs of HCV and the high immunosuppressive therapy, including bolus of steroids, within the first days post LT. In conclusion, our case suggests that monitoring HCV RNA after LT could be recommended to detect and treat early relapse, even after a long virologic response. 相似文献