Gamma-Delta T-Cell Lymphoma Following Allogeneic Stem Cell Transplant for Primary Myelofibrosis.

Primary myelofibrosis (PMF) is a disease that affects the bone marrow. It presents with cytopenias, hepatospleomegaly accompanied with extramedullary hematopoiesis, and often with constitutional symptoms. Cytotoxic gamma-delta T-cells are considered a distinct hepatosplenic lymohoma.