Dactilitis and oligoarthritis after BCG immunotherapy in a patient affected by bladder cancer

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C.U. Manzini *
L. Bernardini
N. Elkhaldi
M.T. Mascia
C. Ferri
(*) Corresponding Author:
C.U. Manzini | office@pagepress.org


The treatment of bladder cancer with Bacillus of Calmette-Guerin (BCG) immunotherapy can induce the appearance of a reactive disorder. The Authors describe a 55-year-old male patient with bladder cancer treated with endovesical instillation of BCG immunotherapy, followed after the fifth application by asymmetric oligoarthritis and dactilitis. The observed positivity of both HLA-B27 and HLA-B51 antigens reinforces the hypothesis of a reactive form, possibly through "molecular mimicry" mechanism. The discontinuation of BCG instillation along which a therapeutic attempt with NSAD failed to improve the rheumatic manifestation, which completely remitted after a four-month course of oral steroids. No relapses of joint and tendon involvement was observed during the following five-month period. The clinico- pathogenetic implications suggested by this case are discussed.

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