[BCGitis following intravesical administration of bacillus Calmette-Guérin].

Intravesical bacillus Calmette-Guérin immunotherapy is currently the most effective treatment for non-infiltrating bladder tumors. Although rare, « BCGitis », local or disseminated, is a serious complication of this therapy. The diagnosis is difficult and often delayed but the infection may progress to multi-systemic failure and can be fatal.