Post-Transplant Lymphoproliferative Disorder, Monomorphic Type, in a Kidney Transplant Patient After Administration of Anti-Influenza Vaccine.

ABSTRACT: Post-transplant lymphoproliferative disorders (PTLD) are rare complications in solid organ transplant patients. Their pathogenesis is largely unknown and closely linked to low immunity, which allows uncontrolled lymphocyte proliferation. Although transplant patients receive annual influenza vaccination as a preventive protocol, we have not found any cases where the flu vaccine triggered a PTLD. We present the case of a 49-year-old female kidney transplant recipient who developed an Epstein-Barr virus-negative PTLD, CD30 + anaplastic monomorphic type, ALK-, which presented the day after a single dose of anti-influenza vaccine. The initial clinical presentation was subcutaneous, but imaging studies revealed multiorgan involvement.