SAN FRANCISCO (EGMN) - Cystoscopy alone offers the best combination of cost and sensitivity for surveillance after treatment of superficial bladder cancer, new data show. In a prospective study comparing five surveillance strategies in 200 patients, the addition of various urine tests to cystoscopy increased the cost per cancer detected, but did not find more invasive tumors, researchers reported at a symposium on genitourinary cancers."Our data suggest that cystoscopy alone is the most cost-effective...