An 85-year-old male with right inguinal lymphadenopathy and suspicion of prostate cancer was admitted to the Institute of Haematology and Transfusion Medicine. Microscopic examination of lymph nodes revealed abundant fields of cohesive CKAE1/AE3-positive cells and small to medium-sized lymphocytic infiltrate expressing CD20 and cyclin D1. Haematoxylin and eosin staining is presented in Figs. 1-3; additional immunohistochemical reactions: CKAE1/AE3, CD20, and cyclin D1 are depicted in Figs. 4-6, respectively.


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