An old term for a chronic eruption of the skin characterised by erythematous (see ERYTHEMA) itching plaques (raised patches on the skin resulting from the merging or enlargement of papules – see PAPULE), which, if left untreated, eventually form tumours and ulcers. The disease is now known to be a form of cancer of lymphocytes (see LYMPHOCYTE) called T-cell LYMPHOMA. It may be responsive to PHOTOCHEMOTHERAPY in its early stages and to RADIOTHERAPY when more advanced.... mycosis fungoides
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