Multicentric reticulohistiocytosis is a rare cutaneous-articular disease th
at may mimic more common disorders such as rheumatoid arthritis or tophaceo
us gout. in one fourth of patients, it is a paraneoplastic process. This br
ief overview is aimed at physicians who care for patients with polyarthriti
s, to alert them to distinctive features that differentiate multicentric re
ticulohistiocytosis from the common arthritides.