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Combinations of disease modifying antirheumatic drugs (DMARDs) are increasingly being used in patients with early rheumatoid arthritis (RA) when long term results with sequential DMARD monotherapy are disappointing. Combination DMARD therapy may be more effective than monotherapy, and has no additional short term adverse events. The evidence for using combination DMARD therapy is still weak, however, and further trials are needed.

The case is reported of a 63 year old man presenting with a rapidly destructive symmetrical polyarthritis and widespread papular nodular skin lesions, confirmed by a biopsy to be due to multicentric reticulohistiocytosis. Biventricular cardiac failure developed secondary to extensive myocardial infiltration with multicentric reticulohistiocytosis, a complication of this disease which has not previously been reported. The joint, skin, and cardiac manifestations of multicentric reticulohistiocytosis substantially regressed following resection of an associated squamous cell carcinoma. This report adds to the small amount of published work which suggests that multicentric reticulohistiocytosis can be a paraneoplastic disease that may respond to treatment directed at the underlying tumour.