@dianeoh26, I'm sorry to read about your recurrence of non-invasive bladder cancer (NIBC) only 3 months after a clean cystoscopy. You asked "how often this type of cancer returns?" Some stages of bladder cancer, and those considered high-grade cancers, are more likely to recur. Careful follow-up is needed to monitor for recurrence.

You might find the information in this article from the Mayo Clinic Cancer Center to be helpful.

- Bladder cancer: What you should know about diagnosis, treatment and recurrence https://cancerblog.mayoclinic.org/2023/05/30/bladder-cancer-what-you-should-know-about-diagnosis-treatment-and-recurrence/

@dianeoh26, do you know the stage and grade of your cancer? What treatment has been recommended for the recurrence?