ULCERATIVE UROCYSTITIS IN A DOG ASSOCIATED WITH A NOCARDIA-LIKE ORGANISM

A 5.8-year-old boxer presented for evaluation of chronic hematuria unr esponsive to antibiotics. Radiography of the abdomen revealed possible dystrophic mineralization of the urinary bladder. Contrast cystograph y revealed a thickened cranioventral bladder wall. Ultrasonography of the abdomen demonstrated multiple cavitary lesions within the prostate gland. Surgical laparotomy and urinary bladder biopsy were performed. Ulcerative urocystitis of undetermined etiology was diagnosed. Gram s tain of the bladder tissue revealed Nocardia-like organisms. Therapy w ith procaine penicillin and sulfisoxazole resulted in resolution of th e hematuria.