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Figure 2: Intraoperative photograph showing the tumor resection cavity; left, white light appearance, and right, appearance under BLUE 400 filter. Diffuse strong red fluorescence is seen on surface (white arrow) around the resection cavity (white arrowhead). The cavity walls themselves are nonfluorescing

Figure 2: Intraoperative photograph showing the tumor resection cavity; left, white light appearance, and right, appearance under BLUE 400 filter. Diffuse strong red fluorescence is seen on surface (white arrow) around the resection cavity (white arrowhead). The cavity walls themselves are nonfluorescing