@codered032, these are good questions to ask your nephrologist. I found these 2 articles:
According to Mayo Clinic's information about Tacrolimus - "this medicine may increase your risk of getting skin cancer or cancer of the lymph system (lymphoma). Talk to your doctor if you have concerns about this risk. https://www.mayoclinic.org/drugs-supplements/tacrolimus-oral-route/side-effects/drg-20068314

- Risk of bladder cancer in renal transplant recipients: a meta-analysis https://www.nature.com/articles/bjc201444

Have you talked to your doctor about these concerns?