• Acta neurochirurgica · Jul 2013

    Fluorescein-guided surgery for grade IV gliomas with a dedicated filter on the surgical microscope: preliminary results in 12 cases.

    • Francesco Acerbi, Morgan Broggi, Marica Eoli, Elena Anghileri, Lucia Cuppini, Bianca Pollo, Marco Schiariti, Sergio Visintini, Chiara Orsi, Angelo Franzini, Giovanni Broggi, and Paolo Ferroli.
    • Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy. acerbi.f@istituto-besta.it
    • Acta Neurochir (Wien). 2013 Jul 1; 155 (7): 1277-86.

    BackgroundFluorescein is widely used as a fluorescent tracer for many applications. Its capability to accumulate in cerebral areas with blood-brain barrier damage makes it an ideal dye for intraoperative visualization of malignant gliomas (MG). We report our preliminary experience in fluorescein-guided removal of grade IV gliomas using a dedicated filter on the surgical microscope.MethodsIn September 2011 we started a prospective phase II trial (FLUOGLIO) to evaluate the safety and obtain initial indications about the efficacy of fluorescein-guided surgery for MG. Patients with suspected MG amenable to complete resection of contrast-enhancing areas were eligible to participate in this study. This report is based on a preliminary analysis of the results of 12 patients with grade IV gliomas out of 15 consecutive cases (age range 48-72 years) enrolled since September 2011. Fluorescein was injected intravenously (i.v.) after intubation (5-10 mg/kg). The tumor was removed using a microsurgical technique and fluorescence visualization by BLU 400 or YELLOW 560 filters on a Pentero microscope (Carl Zeiss, Germany). The study was approved by our ethics committee and registered on the European Regulatory Authorities website (EudraCT no. 2011-002527-18).ResultsHistological analysis confirmed grade IV gliomas in 12/15 cases. Median preoperative tumor volume was 33.15 cm(3) (9.6-87.8 cm(3)). No adverse reaction related to the administration of fluorescein was registered. Contrast-enhanced tumor was completely removed in 75 % of the patients.ConclusionThis preliminary analysis suggested that the use of intravenous fluorescein during surgery on grade IV gliomas is safe and allows a high rate of complete resection of contrast-enhanced tumor at the early postoperative MRI.

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