Titre
Clinical evaluation of a method for detecting superficial surgical transitional cell carcinoma of the bladder by light-induced fluorescence of protoporphyrin IX following the topical application of 5-aminolevulinic acid: preliminary results.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Jichlinski, P.
Auteure/Auteur
Forrer, M.
Auteure/Auteur
Mizeret, J.
Auteure/Auteur
Glanzmann, T.
Auteure/Auteur
Braichotte, D.
Auteure/Auteur
Wagnières, G.
Auteure/Auteur
Zimmer, G.
Auteure/Auteur
Guillou, L.
Auteure/Auteur
Schmidlin, F.
Auteure/Auteur
Graber, P.
Auteure/Auteur
van den Bergh, H.
Auteure/Auteur
Leisinger, H.J.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
0196-8092
Statut éditorial
Publié
Date de publication
1997
Volume
20
Numéro
4
Première page
402
Dernière page/numéro d’article
8
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't - Publication Status: ppublish
Résumé
BACKGROUND AND OBJECTIVE: In bladder cancer, conventional white light endoscopic examination of the bladder does not provide adequate information about the presence of "flat" urothelial lesions such as carcinoma in situ. In the present investigation, we examine a new technique for the photodetection of such lesions by the imaging of protoporphyrin IX (PpIX) fluorescence following topical application of 5-aminolevulinic acid (ALA). STUDY DESIGN/MATERIALS AND METHODS: Several hours after bladder instillation of an aqueous solution of ALA in 34 patients, a Krypton ion laser or a filtered Xenon arc-lamp was used to excite PpIX fluorescence. Tissue samples for histological analysis were taken while observing the bladder wall either by means of a video camera, or by direct endoscopic observation. RESULTS: A good correlation was found between the PpIX fluorescence and the histopathological diagnosis. On a total of 215 biopsies, 143 in fluorescent and 72 in nonfluorescent areas, all visible tumors on white light cytoscopy appeared in a bright red fluorescence with the photodetection technique. In addition, this method permitted to discover 47 unsuspected carcinomatous lesions on white light observation, among which 40% were carcinoma in situ. CONCLUSION: PpIX fluorescence induced by instillation into the bladder of 5-ALA is an efficient method of mapping the mucosa in bladder carcinoma.
PID Serval
serval:BIB_4103DCCC6568
PMID
Date de création
2008-01-21T15:09:55.283Z
Date de création dans IRIS
2025-05-20T18:21:33Z