Male, 67 years old, with squamous cell carcinoma of the left eyebrow. The left supraorbital skin is thickened, irregular and enhancing. This abnormal tissue spans approximately 45 mm across the left forehead.This lesion invades the adjacent frontal bone involving the orbital roof and a small portion of the left frontal sinus. This component of the lesion measures 19 x 12 mm. This lesion completely traverses the left frontal bone and abuts the underlying dura. The dura adjacent to this region of contact is enhancing. No definite intraparenchymal lesions are seen.The lesion mildly encroaches upon the extraconal orbit. The lesion approaches the superior margin of the globe rather closely but there is no evidence of intraocular invasion. No intraconal disease is demonstrated at this time.Elsewhere in the brain, a few scattered foci of nonspecific T2 hyperintensity are demonstrated. No significant mass effect or parenchymal edema is demonstrated. No evidence of intracranial hemorrhage or any abnormal extra-axial fluid collection is seen.
A lesion is seen involving the left supraorbital skin compatible with a history of squamous cell carcinoma. This lesion invades the adjacent frontal bone with erosion of the orbital roof and the left frontal sinus.The lesion completely traverses the frontal bone and contacts the underlying dura. The dura adjacent to this region of contact is enhancing, which could represent an inflammatory reaction but the possibility of malignant dural invasion cannot be excluded. No definite brain parenchymal invasion is seen at this time.The lesion does invades the extraconal orbit to a mild degree. Tumor closely approaches and may even contact the superior surface of the globe, but no intraocular invasion is suspected.