[Subacute cognitive impairment and urinary retention due to primary central nervous system post-transplant lymphoproliferative disorder: a case report].

We report a 66-year-old man with primary central nervous system post-transplant lymphoproliferative disorder (PCNS-PTLD). He had received a living-donor kidney transplantation at the age of 64 years. Although he had a good postoperative course by continuing to take oral immunosuppressive agents, he was admitted to our hospital for subacute cognitive impairment and urinary retention two years after the transplantation. Brain MRI revealed high-intensity lesions on FLAIR and T 2