sneaky cancer!! Here is a page from the NCI...and a lot depends on the stage and grade of the cancer. This page describes treatment but see the links on the side of the page for full description and reading that will probably confuse you but it really explains it well.
www.cancer.gov/cancertopics/pdq/treatment/urethral/Patient/page5
Here's hoping its in early stages and a simple treatment.
Does your husband have a neobladder?
pat