This document discusses different types of urinary tract infections (UTIs) including their causes. It mentions that cystitis is usually caused by bacteria like E. coli and makes up 80% of UTIs. Urethritis is caused by organisms like Chlamydia trachomatis and Neisseria gonorrhoeae and accounts for 10-15% of UTIs. Less than 1% of UTIs are non-infectious and can be caused by factors like low estrogen levels or physical obstructions. The document also outlines different surgical procedures for urinary diversions including nephrostomies, cutaneous ureterostomies, and ileal conduits.