Abstract

Purpose We determined whether the sensitivity of detecting dysplasia or early bladder cancer can be improved by 5-aminolevulinic acid induced porphyrin fluorescence. Materials and Methods A 3 percent 5-aminolevulinic acid solution was instilled intravesically before cystoscopy in 104 patients. The 5-aminolevulinic acid induced porphyrin fluorescence was excited by violet light from a krypton ion laser (wavelength 406.7 nm.). Results The sensitivity of the fluorescence cystoscopy (96.9 percent) was significantly (p less than 0.0001) greater than that of white light cystoscopy (72.7 percent). There was no impact on specificity. Conclusions Due to the high sensitivity of the procedure fluorescence guided biopsies are recommended instead of random biopsies.

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