Primary Central Nervous System Post-transplant Lymphoproliferative Disorder Diagnosed by Peripheral Facial Nerve Palsy.

Although primary central nervous system post-transplant lymphoproliferative disorder (PCNS-PTLD) causes various symptoms depending on the tumor region, there has been no previous report of PCNS-PTLD in the cerebellopontine angle that was diagnosed due to peripheral facial nerve palsy. We herein report a case involving a 62-year-old man with PCNS-PTLD in the cerebellopontine angle who was diagnosed due to peripheral facial nerve palsy. The reduction of immunosuppressive therapy, whole-brain radiotherapy, intrathecal chemotherapy, and rituximab were effective in treating this patient. Physicians should therefore be mindful that PCNS-PTLD can cause peripheral facial nerve palsy in renal transplant recipients.