【关键词】 Early,Lesion Division of Hematologic Malignancies, Dana-Farber Cancer Institute, Boston, Massachusetts, USA Key Words. PTLD ; Early Lesion ; Polymorphic PTLD ; Monomorphic PTLD ABSTRACT Post-transplant lymphoproliferative disorder is the most common malignancy, with the exception of skin cancer, after solid organ transplantation in adults. The incidence ..