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Abnormalities in host immunologic defenses may be associated with melanoma and lupus erythematosus, In two patients, cutaneous lupus erythematosus developed in the course of melanoma. Immunoglobulin deposits and complement were seen on direct immunofluorescence of exposed uninvolved skin. One patient was undergoing immunotherapy with BCG vaccine when the eruption occurred.
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James K. Herstoff (1979) studied this question.
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