Biologic behavior of feline lower urinary tract diseases.

This case represents the typical presentation and natural progression of idiopathic lower urinary tract disease in cats. As depicted, it generally occurs in young cats. Cats often have evidence of hematuria with minimal or no leukocyturia. In this cat, clinical signs and hematuria subsided in 3 days. Tristan was evaluated monthly for 1 year. During this period, a recurrence of clinical signs or hematuria did not occur.