Very late onset post-transplant diffuse large B cell lymphoma in a liver transplant recipient with hepatitis B: A case report

Comparison of Post-Transplantation Lymphoproliferative Disorder Risk and Prognostic Factors between Kidney and Liver Transplant Recipients

Post-transplantation lymphoproliferative disorder (PTLD) is a life-threatening complication of solid organ transplantation (SOT). Its development risk varies among organ graft recipients. In this study, retrospective data were analyzed to compare PTLD’s risk and prognostic factors between adult kidney and liver transplant recipients (KTRs and LTRs, respectively). Over 15 years, 2598 KTRs and 1378 LTRs were under observation at our center. Sixteen KTRs (0.62%) and twenty-three LTRs (1.67%) were diagnosed with PTLD. PTLD developed earlier in LTRs (p < 0.001), SOT patients > 45 years old (p = 0.002), and patients receiving tacrolimus (p < 0.001) or not receiving cyclosporin (p = 0.03) at diagnosis. Tacrolimus use, male sex, and age > 45 years old significantly affected the time of PTLD onset in KTRs (hazard ratio (HR) = 18.6, 7.9 and 5.2, respectively). Survival was longer in LTRs < 45 years old (p < 0.009). LTRs were more likely than KTRs to achieve complete remission (p = 0.039). Factors affecting PTLD development and outcome differ between KTRs and LTRs; thus, these populations should be separately evaluated in future studies.

Infectious complications during immunochemotherapy of post-transplantation lymphoproliferative disease–can we decrease the risk? Two case reports and review of literature

BACKGROUND

Post-transplant lymphoproliferative disease (PTLD) is a heterogeneous group of diseases that develop after solid organ and hematopoietic stem cells transplantation related to intensive immunosuppression regimen, T-cell depletion and Epstein-Barr virus infection. Despite the improvement in the management of PTLD, the prognosis remains poor. Here we report the management of two transplanted patients with PTLD and infections during immunochemotherapy (ICTH).

CASE SUMMARY

Of 65-year-old woman 11 years after kidney transplantation (first case) presented with diffuse large B-cell lymphoma (DLBCL) CS III and started ICHT according to R-CHOP protocol. Despite the secondary prevention of neutropenic fever, the patient developed grade 4 neutropenia with urinary and pulmonary tract infections after the fifth cycle. ICTH was continued in reduced doses up to 7 cycles followed by involved-field radiation therapy of the residual disease. The second case presents a 49-year-old man, 8 years after liver transplantation due to cirrhosis in the course of chronic hepatitis B, who started ICTH for DLBCL Burkitt-like CS IV. The patient received four cycles of ICTH according to R-CODOX/R-IVAC protocol, with reduced doses. In both cases initially undertaken reduction of immunosuppression was ineffective to prevent infectious complications. Despite one incomplete ICHT treatment due to recurrent infections, both our patients remain in complete remission.

CONCLUSION

Reduction of immunosuppression and the doses of chemotherapeutics may be insufficient to prevent infectious complications during ICTH in PTLD patients.

Role of Radiotherapy in Post-transplant Lymphoproliferative Disorders: Three Case Reports and Review of the Literature

Post-transplant lymphoproliferative disorder (PTLD) is an aggressive malignancy that occurs in patients who have undergone solid organ transplantation or hematopoietic stem cell transplantation. It develops as the result of uncontrolled cell proliferations owing to reduced immunological surveillance. PTLD may occur with a various spectrum of clinical presentations, including both localized and extensive disease. Management can be significantly variable according both to the clinical presentation and to the histologic features. The most important systemic treatment strategies are reduction of immunosuppressive therapy, chemotherapy, anti B-cell antibodies, especially rituximab and cytokine-based therapies. The localized form of PTLD could be efficiently treated, and potentially cured, with surgery or radiotherapy (RT). Involved site RT may be a feasible effective option for the treatment of patients with PTLD, given the excellent radio-sensitivity of lymphoid disorders. In this report, we describe 3 adult patients with PTLD treated with moderate-dose RT (24-36 Gy) having a good local control with negligible toxicity. We also review the literature data on the role of radiation therapy in this particular setting.