Typical EATL type 2 histology from one of the cases in the study. (A) The lymphoma consists of monotonous, medium-sized cells with round nuclei having a stippled chromatin pattern (magnification, 250×). (B) The cells express CD56 (magnification, 250×). The mucosa adjacent to the lymphoma, shows villous atrophy (C; magnification, 100×) and intra-epithelial infiltration by lymphoma cells (D; CD56 staining, magnification, 400×).