title: Mycobacterium kansasii arthritis of the knee joint.
abstract: Mycobacterium kansasii infection of the knee joint was diagnosed in  an 11-year-old boy on the basis of skin testing to atypical mycobacteria, and a positive culture from a synovial tissur biopsy. Appropriate antituberculose drugs shoud be institute as sole treatment if no bony destruction is present. Ifthere is no response to chemtherapy, synovectomy should be performed.
mesh_terms: D001170:Arthritis, Infectious / Q000473:pathology*; D002648:Child; D006801:Humans; D007719:Knee Joint / Q000473:pathology; D008297:Male; D009161:Mycobacterium; D009164:Mycobacterium Infections / Q000382:microbiology / Q000473:pathology*; D009170:Nontuberculous Mycobacteria; D013583:Synovial Membrane / Q000473:pathology