 There is asymmetric prominence of the right cavernous sinus with pre-T1 and T2 images showing soft tissue signal along the medial aspect of the right cavernous sinus with asymmetrically smaller right cavernous carotid artery as compared to the left. This soft tissue enhances postcontrast and measures up to 10 x 6 mm on series 601 image 10. The overall appearance is without significant change.The pituitary gland is not enlarged. There is no abnormal enhancement within the pituitary gland or focal lesion. There is no mass effect on the suprasellar cistern or optic chiasm. The Meckel's caves are symmetric and normal in appearance. The imaged brain parenchyma elsewhere appears unremarkable.There is mild asymmetric ill-defined diffuse enhancement in the left frontal calvarial marrow, incompletely imaged, but probably unchaged. There is no discrete osseous marrow lesion identified. The pre-contrast T1 images show no discrete lesion in the incompletely imaged left frontal calvarium marrow.
1.No significant change in enhancing soft tissue thickening along the medial aspect of the right cavernous sinus with asymmetrically narrowed right cavernous carotid artery. Differential diagnosis includes meningioma, less likely a pituitary tumor, or perhaps even an anatomic variation.2.No additional discrete pituitary mass identified.3.Stable diffuse enhancement in the left frontal calvarial marrow which is incompletely imaged, favored to represent a benign process such as fibrous dysplasia. This can be further imaged on CT as clinically warranted.