Can bladder cancer occur in teenagers?

No: Obviously we never say never, but standard bladder cancer tends to occur later in life, is often associated with a history of smoking, and much more common in men then women. I've never seen a teenager with bladder cancer.

Extremely rarely: Bladder cancers is a cancer of adults. But some adult cancers do occur in children but on very rare occasions. Seek a second opinion for confirmation of this diagnosis if it happens to develop in a teenager.

Yes, but very rarely: Bladder rhabdomyosarcoma is a rare, but very dangerous type of bladder cancer, usually occurs in much younger children, but occasionally in teenagers. Some children can survive with very invasive treatment. I have seen and treated a low grade transitional cell cancer in a ciggarette smoking boy who was also exposed to 2nd hand smoke from both parents from whom he stole ciggarettes!