Plasmacytic Hyperplasia Post-Transplant Lymphoproliferative Disorder

**Semantic type:** Disease or Syndrome

**Definition:** An early post-transplant lymphoproliferative lesion characterized by plasmacytic proliferation and architectural preservation of the involved tissues. It often regresses either spontaneously or after reduction in immunosuppression. The immunoglobulin genes are not rearranged. In some cases, a polymorphic or monomorphic post-transplant lymphoproliferative disorder may follow this early lesion.

**Synonyms:** - Plasmacytic Hyperplasia PTLD