[Histological, electron-optical and histochemical findings in mycosis fungoides]

Skin excisions were investigated in 5 patients with verified mycosis fungoides. Findings yielded by light and electron microscopy helped to confirm the findings anticipated, and were correlated with histochemical observations. One of the cases involved a substantially higher activity of lysosomal enzymes, particularly KF and beta-glucuronidase in the skin infiltrate mycotic cells. In the other cases, this sort of activity was low. The significance of high ATPase activity in the peripheral cell membrane remains unclear. In one case, involvement in the T lymphocyte series was confirmed by the formation of rosettes.