A report of iliac muscle abscess due to Mycobacterium bovis after bacillus Calmette-Guerin therapy for bladder cancer.

Bacillus Calmette-Guerin (BCG) vaccine is traditionally used for vaccination against tuberculosis. BCG vaccine contains live attenuated strain of Mycobacterium bovis. Intravesical BCG is also effective in treatment of transitional cell carcinoma of the urinary bladder.