Today, Christine is scheduled to have a fifth procedure to fix her ureter, which has become almost completely blocked by scar tissue.

CNN: Should I sue my doctor?

Others are treated with ureteroscopy, in which a scope is passed through the urethra and bladder and up the ureter into the kidney.

CNN: What can I do for kidney stones?

Grant says the complication that caused all these problems -- the nicking of a ureter -- would most likely be considered a regular complication of the surgery, and not negligence.

CNN: Should I sue my doctor?

Christine says her doctor explained what he thought went wrong: When he was using a cauterizing tool, he must have nicked the ureter, the duct that carries urine from the kidneys to the bladder.

CNN: Should I sue my doctor?