Late invasive recurrence despite long-term surveillance for superficial bladder cancer.
Superficial transitional cell carcinoma of the bladder is associated with a 15 to 70% recurrence rate within 2 years. Most recurrences are superficial. A recurrence after 2 disease-free years is unusual. A review of the tumor registry revealed 124 patients followed for superficial disease at the Veterans Administration Center in Baltimore. Of the patients 20 were identified with either stage Ta (7) or stage T1 (13) papillary transitional cell carcinoma who had completed at least 5 years of surveillance without tumor recurrence. Invasive transitional cell carcinoma of the bladder requiring cystectomy developed in 7 of these 20 patients after remaining tumor-free for 5 years (stage Ta in 4 and stage T1 in 3). All 7 patients had organ-confined disease and were alive with no evidence of disease at 18 months to 5 years after cystectomy. These results demonstrate that superficial, low grade transitional cell carcinoma of the bladder can become muscle invasive despite careful surveillance and a long dormant period. In our series yearly cystoscopy and urine cytology identified tumor recurrence before metastases developed, suggesting that long-term surveillance is required in patients with superficial bladder cancer.