An Unusual Case of Perineural Infiltration and Orbital Invasion of Squamous Cell Carcinoma Associated with Actinic Keratosis

Figure 1

(a) Complete left ophthalmoplegia and left upper-eyelid ptosis. (b) Actinic keratosis of the left cheek. (c) Facial and orbital MRI: sagittal view: infiltrating lesion extending through the left infraorbital canal orbital apex and the left cavernous sinus with perineural infiltration. (d) Facial and orbital MRI: coronal view: infiltrating left orbital process started from the left cheek with a large amount of necrosis.

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