This is the MONOMORPHIC post transplant lymphoproliferative disorder type. Aggressive lymphoma Image

monomorphic medium sized cells with round to oval nuclei, predominantly dispersed chromatin, occasional small nucleoli,k and scant cytoplasm Image

Ki67 positive in 100% Image

CD20 positive, as is CD10 and CD19. BCL 6 positive. This lymphoma shows "burkitt's like" features thus. Image