Related Experiment Videos
Post-transplant malignant lymphoma. Distinctive morphologic features related to its pathogenesis
The American Journal of Medicine
|November 1, 1976
Summary
Two renal transplant patients developed central nervous system lymphomas. These immunoblastic sarcomas, characterized by specific cell morphology, suggest long-term antigenic stimulation may drive their development.
Area of Science:
- Oncology
- Transplantation Immunology
- Neuropathology
Background:
- Post-transplant lymphoproliferative disorders (PTLD) are a known complication after organ transplantation.
- Renal transplant recipients are at risk for developing PTLD, which can manifest in various organs.
Observation:
- Two renal transplant patients presented with central nervous system (CNS) involvement.
- Histologic examination revealed monomorphic cell proliferation consistent with diffuse large lymphoid lymphoma with pyroninophilia or immunoblastic sarcoma.
Findings:
- The tumor cells exhibited distinct morphologic features: large vesicular nuclei, prominent basophilic nucleoli, and strongly pyroninophilic cytoplasm.
- These cellular characteristics resemble those found in antigenically stimulated lymph nodes and in certain types of lymphomas associated with immunodeficiency or autoimmune conditions.
Implications:
- The findings support the hypothesis that chronic antigenic stimulation may play a crucial role in the pathogenesis of these lymphomas in transplant recipients.
- Further research into the role of Epstein-Barr virus and other antigens in PTLD is warranted.