40 year-old female with calvarial abnormality. Surveillance scan. There is no evidence of intracranial hemorrhage, mass or edema. Bilateral basal ganglia calcifications particularly involving the lentiform nucleus. The ventricles and basal cisterns are normal in size and configuration.In the left frontal calvarium is a multiloculated lesion that involves the inner table of the calvarium with a remodeled, but well-defined surrounding border. The internal contents of the lesion demonstrate spiculations and water/soft tissue density without evidence of expansion or compression of the adjacent brain parenchyma. The lesion measures approximately 2.6 cm in widest dimension, (series 80486, image 11). The lesion was present on previous MRI dated 6/2010 and while accounting for differences in modalities, the lesion does not appear to have changed in size when compared to the previous examination. A smaller similar appearing lesion is present in the right frontal calvarium measuring approximately 4 mm in widest dimension, also unchanged, (series 6, image 17). The visualized paranasal sinuses and mastoid air cells are normally pneumatized.
1. Left frontal calvarial lobulated lesion, not significantly changed in size when compared to MRI dated 6/2010. The morphology, signal characteristics and lack of significant change over time are suggestive of a benign lesion, possibilities of which include hemangioma.2. Bilateral basal ganglia calcifications.