Summary

This report describes an adolescent girl with primary Epstein–Barr virus (EBV) infection in the setting of intensive immunosuppression for a cardiac transplant. She went on to develop progressive pain, weight loss and night sweats with necrosis of the tonsils over 8 weeks. The clinical impression was initially that of a complicated tonsillitis secondary to immune dysfunction. Biopsy 2 months after first presentation demonstrated diffuse B cell lymphoma consistent with post-transplant lymphoproliferative disorder (PTLD). We present this case to highlight the need for a high degree of clinical suspicion for PTLD in a population of patients who commonly experience primary exposure to EBV.