A CT urogram is a test that uses a CT scan and a special dye or contrast medium. It allows doctors to diagnose problems such as kidney and bladder stones, certain cancers, and structural ...

What is a CT urogram? A CT urogram is a test using a CT scan and special dye called a contrast medium to look at the urinary system. The contrast medium helps show up the urinary system more clearly.

After a diagnosis of urothelial cancer, doctors will assign a stage to the disease -- determining how deep the tumor has invaded into the bladder and whether there is any spread to the lymph nodes and ...