33-year-old female with worst headache of her life x 3 days There is no evidence of intracranial hemorrhage, mass or edema. A small focus of mildly increased attenuation in the posterior cranial fossa with possible slight effacement of the right posterior border of the fourth ventricle is seen on a single slice in multiple planes. The remainder of the ventricular system is normal. This is a nonspecific finding and may be artifactual. Recommend MRI if clinically indicated. Slight focal irregularity and waviness of the right lateral ventricle lateral border is nonspecific and may be artifactual or represent isolated remote ischemic event. The remainder of the periventricular white matter is normal. There is a well-demarcated expansile lesion in right supraorbital ridge measuring 2 x 1 x 1.7 cm with no cortical erosion and preservation of the adjacent soft tissue planes. This appearance favors a benign process such as a hemangioma or ossifying fibroma. Left maxillary sinus mucus rentention cyst measuring 1.5 x 1.5 cm is incompletely visualized. The visualized paranasal sinuses and mastoid air cells are normally pneumatized.
1) No intracranial hemorrhage. 2) Foci of increased attenuation adjacent to the 4th ventricle may represent artifact. Recommend MRI if there is clinical suspicion for mass. 3) Right supraorbital expansile bone lesion, likely benign, such as a hemangioma or ossifying fibroma.  