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Intraoperative photographs under microscopic view: in (a), the schwannoma is visible between common peroneal nerve and sural nerve. After the YELLOW560 filter activation, the tumor showed a fluorescein uptake more intense than the surrounding nerves (b). The capsule (arrow in c) appeared extremely thick and adherent to the tumor and the originating nerve, requiring multiple manipulations for intraneural dissection and schwannoma removal (d-f).
