Fig. 1.
Summary of study workflow. A Bevacizumab-800CW is administered intravenously through a bolus injection. B Three days after administration, in vivo fluorescence molecular imaging is performed during surgery to study the clinical use. C During tissue processing, ex vivo fluorescence molecular imaging of all FFPE blocks is performed. Ultimately, fluorescence signal is correlated with final H&E histopathology (i.e., presence of SNIP) and VEGF-A immunohistochemistry. Abbreviations: FFPE, formalin-fixed, paraffin-embedded; H&E, hematoxylin and eosin; SNIP, sinonasal inverted papilloma; VEGF-A, vascular endothelial growth factor A