Bladder rupture is uncommon. It typically follows significant trauma to the pelvis, for example following a RTA, assualt or a fall from a height. It is often associated with other injuries, in particular pelvic fractures.
High clinical suspicion combined with suggestive findings on a standard trauma CT (portal venous phase) is required, to instigate the decision to instill iodinated contrast via a urinary catheter to clinch the diagnosis.