Topical nitrogen mustard in mycosis fungoides.

A twelve-year experience in thirty-three patients suffering from early mycosis fungoides in the plaque stage confirmed the effectiveness of topical nitrogen mustard (chlormethine) therapy. Fourteen patients were in complete remission at the latest time of observation and seven in partial remission. The probability of freedom from relapse was approximately 50% after 6 and 12 years. Three deaths attributable to mycosis fungoides were recorded. Another three patients had to discontinue treatment due to contact dermatitis to nitrogen mustard. Specific precautions were undertaken in order to protect personnel handling the drug. No damaging or toxic effects were observed among staff and no haematological side-effects were observed among the patients. The treatment as a whole was well tolerated.