An association of erythema annulare centrifugum with malignant histiocytosis is reported. The erythema annulare centrifugum preceded the malignant histiocytosis by 20 months but careful review of the patient led to early diagnosis of the malignancy. Monoclonal antibody studies helped to confirm the nature of the tumour.
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Dodd et al. (1984) studied this question.
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