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Mentions: Pathology of his appendix by immunostaining revealed anaplastic cells strongly positive for CD3, CD56 together with strong focal EBV-encoded RNA (EBER) staining (Figures 1, 2, 3 and 4). The malignant cells were negative for CD20, CD30, CD45, CD5, Alk-1 and TCK. The tissue was found to be positive for the T-cell receptor (TCR) by gamma gene rearrangement studies by PCR analysis (Figure 5). Immunoglobulin heavy chain rearrangement (IgH) by PCR analysis did not detect a clonal B-cell population, thereby confirming T-cell lymphoma. A bone marrow examination revealed no involvement with negative flow cytometry and showed normal male karyotype (46, XY). A staging positron emission tomography (PET) scan showed increased radiotracer uptake in the right cervical and left groin lymph nodes along with the 3.3 cm liver mass. Non-specific uptake in the stomach was also observed.
Epstein Barr Virus-positive large T-cell lymphoma presenting as acute appendicitis 17 years after cadaveric renal transplant: a case report
Bottom Line: The tissue tested positive for T-cell receptor gene rearrangement by polymerase chain reaction analysis.Treatment management involved reduction of immunosuppression and initiation of chemotherapy with cisplatin, etoposide, gemcitabine, and solumedrol followed by cyclophosphamide, hydroxydaunorubicin, vincristine and prednisone).He recovered and the allo-grafted kidney is fully functional.
Affiliation: Department of Medicine, Banner Estrella Medical Center, 9201 W, Thomas Road, Phoenix, AZ 85037, USA. firstname.lastname@example.org.
Introduction: The majority of post-transplant lymphoproliferative disorders in renal transplant patients are of the B-cell phenotype, while the T-cell phenotype is rare. We report a case of Epstein Barr Virus-positive, T-cell lymphoma in a renal transplant patient, presenting unusually as acute appendicitis.
Case presentation: A 45-year-old Hispanic male renal transplant patient presented with right-side abdominal pain 17 years after transplant. The laboratory studies were unremarkable. Laparoscopic exploration showed an inflamed appendix so a laparoscopic appendectomy was performed. Pathology of the appendix showed large cells positive for CD3, CD56 and Epstein Barr Virus-encoded RNA staining, and negative for CD20 and CD30. The tissue tested positive for T-cell receptor gene rearrangement by polymerase chain reaction analysis. Treatment management involved reduction of immunosuppression and initiation of chemotherapy with cisplatin, etoposide, gemcitabine, and solumedrol followed by cyclophosphamide, hydroxydaunorubicin, vincristine and prednisone). He recovered and the allo-grafted kidney is fully functional.
Conclusion: We report a rare case of post-renal transplant large T-cell lymphoma, with an unusual presentation of acute appendicitis and Epstein Barr Virus-positivity, which responded well to chemotherapy.