CUTANEOUS LYMPHOMA WITH PHOTOSENSITIVITY

We present a case of cutaneous lymphoma with photosensitivity. We cons ider ''cutaneous lymphoma'' as a primary malignant lymphoma of the ski n, and not as mycosis fungoides. We made an initial diagnosis of actin ic reticuloid. However, there were some clinical aspects and laborator y findings which were not compatible with the criteria for actinic ret iculoid in our case: the age of the patient at onset of the skin erupt ion was too young, and no severe photosensitivity was found within a w ide range of ultraviolet radiation. In addition, immunohistochemical e xamination indicated marked proliferation of CD4(+) T cells in the ski n. Monoclonal rearrangement of the T cell receptor gene around the inf iltrating cell was recognized with Southern blotting technique. From t hese findings, we selected ''cutaneous lymphoma with photosensitivity' ' as the most suitable diagnosis.