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[Prosthetic knee infection caused by Listeria monocytogenes in a woman with rheumatoid arthritis and Waldenström s macroglobulinemia].

Listeria are gram-positive bacilli that can be isolated from soil and in the normal fecal flora of many mammals. It is a uncommon pathogen in the general population, but immunocompromised individuals can develop several focal infections, most notably meningoencephalitis and sepsis. Nevertheless, infectious arthritis caused by Listeria monocytogenes is a exceptional event. We report a new case of prosthetic knee arthritis due to Listeria in a woman with seropositive rheumatoid arthritis and Waldenström s macroglobulinemia receiving prednisone and methotrexate. In addition, we review the literature on listeria joint infections.