Post-transplant lymphoproliferative disorder after autologous peripheral stem cell transplantation in a pediatric patient

Post-transplant lymphoproliferative disorder (PTLD) is a complication of al logeneic bone marrow transplantation (BMT). Rare cases of PTLD after autolo gous BMT have been reported only in adults. This case report is the first t o describe PTLD in a pediatric patient after autologous peripheral stem cel l transplantation (PSCT), This 2-year-old male with stage IV neuroblastoma underwent autologous PSCT, The post-PSCT course was complicated by fever wi th hematochezia and a lung mass. On day 94 post PSCT, colonoscopy revealed an ulcer due to a PTLD, monomorphic type, B cell phenotype, associated with Epstein-Barr virus. Fine needle aspiration identified the lung mass as neu roblastoma, PTLD can occur in pediatric autologous PSCT recipients, and may occur more frequently in autologous grafts manipulated by T cell depletion or CD34(+) cell selection.