I had bladder cancer when i was only 16 yrs. old. The Drs. said i was the youngest person they had ever seen with this type of cancer, since it usually occurs in elderly people, or at least older than 16. Mine was only the size of a match head. I had to much protein in my urine which lead to more tests and thats how they found it. I had laser surgery, and checkups every 3 months at first and now down to once a yr. I am 33 yrs old now. They told me that bladder cancer almost always returns, but so far so good. We asked what could have caused my cancer and they told my family and I that possibly Tylenol or some sort of pesticide. I thought that was interesting because as a teenager i remember taking tylenol like candy, for every little pain i thought i had.