Fig. 5From: Assessment of perineural spread in advanced cutaneous squamous cell carcinomas treated with immunotherapyPerineural spread (PNS) in left V1, not detected by fluorodeoxyglucose-positron emission tomography computer tomography (FDG-PET/CT). Magnetic resonance imaging (MRI): (A) Axial T1, thickened left supraorbital nerve PNS. B MRI Axial T1 post-contrast fat saturation (FS), thickened left supraorbital nerve PNS with mild enhancement. C FDG-PET/CT axial image at the left superior orbital canal, no avidity in the PNS. PNS not detected on FDG-PET/CT. D MRI Coronal T1 FS post-contrast, demonstrates thickened enhancing left supraorbital nerve PNSBack to article page