Reason: history of metastatic renal cell carcinoma with new brain metastases; evaluate for radiosurgery treatment planning History: brain metastases The CSF spaces are appropriate for the patient's stated age with no midline shift. There is an 11 x 8 mm enhancing nodule superior aspect of the right cerebellar hemisphere and the right superior semi-lunar lobule it is associated susceptibility effect. It is stable compared to the prior exam.The visualized portions of the paranasal sinuses demonstrate a mucus retention cyst in the right maxillary sinus. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.
1.Right cerebellar lesion is suspected to represent metastatic disease. Associated blood products are identified within the lesion indicating that it is fairly vascular.2.This is a limited exam for the purpose of surgical navigation.