[Expert Solution]: A 48-year-old right handed, Spanish…

A 48-year-old right handed, Spanish speaking gentleman initially presented while at work, with a syncopal episode that lasted 20 minutes. He was taken to the Hospital where an MRI of the brain revealed evidence of a large tumor in the left temporal region. He was placed on Dilantin, and released. More recently, he presented to the ED with symptoms of dizziness and headache. A Ct of the head confirmed this lesion. A referral was placed to NeuroOncology where my team met this patient. We saw him for a surgical opinion regarding his case. He denies any further seizures, headaches, nausea. He does complain of visual symptoms of blurring in his left eye. This tumor is a meningioma, and meningiomas nearly always arise from a dural surface. Based on this patient’s imaging below…what structure is the meningioma arising from?