 There is a 2.8 cm transverse x 3.7 cm AP x 3.8 cm craniocaudal lesion within the posterior right parietal lobe associated with vasogenic edema and adjacent mass effect upon the right lateral ventricle. Mass effect effaces the right occipital horn, effaces adjacent right hemispheric sulci, and results in mild right to left midline shift measuring 4 mm.A second lesion is present within the left cerebellar hemisphere measuring 2.0 cm transverse x 1.6 cm AP x 1.7 cm craniocaudal with associated vasogenic. The fourth ventricle remains normal in size and shape.There are no herniations. The cerebellar tonsils remain in normal position. Incidental note is made of a partially to sella. There is no evidence for intracranial hemorrhage or acute cerebral, brainstem or cerebellar infarction. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. The paranasal sinuses and mastoid air cells are clear.
1.Given the history of known metastatic breast cancer, there are 2 brain metastases; one in the right parietal lobe, the other in the left cerebellar hemisphere, as described in detail above.2.There are no herniations.