title: Editorial comment.
authors.forename: Arthur I
authors.initials: AI
authors.lastname: Sagalowsky
mesh_terms: D000622:Aminolevulinic Acid / Q000031:analogs & derivatives*; D003558:Cystoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology*; D009367:Neoplasm Staging / Q000379:methods*; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis*
chemical_list: D000622:Aminolevulinic Acid; C419924:5-aminolevulinic acid hexyl ester