When I had an umbilical hernia one of the post-op side effects was it blocked the normal flow from my bladder, I had an external bag (urostomy) attached to my leg, filled by a catheter, I had to empty the bag into a toilet. It was only temporary (about 3 days) until the swelling went down. There are multiple surgical solutions for something longer term, like bladder removal.Huh. How do you operate without a Bladder, then? I never knew it was possible to not have one.