Prostate cancer recurrence in the urethra with low PSA.

When localised prostate cancer recurs after treatment, it occurs predictably in sites such as the prostatic bed, pelvic lymph nodes, spine, lung, and liver. Urethral metastasis of prostate cancer is exceedingly rare. We report a case of urethral recurrence of prostate cancer presenting as new lower urinary tract symptoms in an 82-year-old male 10 years after robotic radical prostatectomy with a very low PSA level of 0.05μg/L. This rare case highlights the need to maintain a degree of suspicion for prostate cancer recurrence in patients with a late onset of or changing lower urinary tract symptoms after radical prostatectomy.