CD8A and melanoma: CD8-positive T cells are frequently observed in T-cell lymphomas, some of them post-thymic [6], nodular lymphocyte predominant Hodgkin lymphoma [7], heterotopic ovarian splenoma, melanoma, mycosis fungoides, splenic hamartoma, and scarcely in B-cell chronic lymphocytic leukemia, lymphomatoid papulosis [8], and mantle cell lymphoma [9,10].