CD274 and classic Hodgkin lymphoma: A strong PD‐L1 expression in the majority of the malignant cells is characteristic and usually observed in 70%‐87% of cHL samples.33 Although some overlapping features to cHL were present in our p‐PTLD cases, stringent criteria allowing the diagnosis of cHL were not met and, thus, they were finally classified as p‐PTLD.