Hiporfin (HpD) for fluorescence-guided resection of recurrent glioblastoma: diagnostic accuracy and feasibility of an integrated photodynamic strategy

Background. Hematoporphyrin derivative (HpD, Hiporfin) is used for photodynamic therapy (PDT) of solid tumors but had never been evaluated for fluorescence guided resection (FGR) in glioma. We assessed Hiporfin fluorescence accuracy against histopathology in recurrent glioblastoma (rGBM) and the feasibility of adding cavity PDT to FGR. Methods. In this prospective single arm series, adults with rGBM received a single preoperative intravenous Hiporfin dose of 5 mg/kg before FGR under blue light excitation and 630 nm cavity PDT. Intraoperative fluorescence assessment was the index test and histo

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