Department of Pathology Friendship Hospital Medical University 100050;
Liver Transplantation Center Clinical Research Center for Digestive Diseases Friendship Hospital Medical University 100050;
Clinical Center for Pediatric Liver Transplantation Medical University 100050;
Department of Critical Liver Diseases Research Center Friendship Hospital Medical University 100050;
Kaposi sarcoma; Post-transplant lymphoproliferative disorder; Liver transplantation; Epstein-Barr virus infections; Human herpesvirus-8; Case report;