Mycosis fungoides. (A) Patches and slightly infiltrated plaques. (B) Bandlike superficial infiltrate with marked infiltration of the epidermis (Hematoxylin & Eosin (H&E), original magnification × 50). (C) Tumor stage. (D) Tumor stage: detail of dermal infiltrate showing medium-sized to large lymphoid cells with hyperchromatic nuclei and blast cells (H&E, original magnification × 480).