List five causes of a pelvic calcification projected over the bladder. List four causes of chronic bacterial cystitis. List four conditions that can lead to the finding of gas in the bladder. List seven causes of a bladder fistula. List three other causes of cystitis. What are the imaging findings in acute cystitis? Why should emphysematous cystitis be differentiated from emphysematous pyelonephritis? Book traversal links for Infection ‹ Bladder Disorders Up List five causes of a pelvic calcification projected over the bladder. ›