 The patient underwent a planning MRI scan with Stealth protocol.  She was brought to the operating room with fiducial still on her scalp.  General endotracheal anesthesia was obtained.  She was placed on the Mayfield head holder and rolled into the prone position.  She was well padded, secured, and so forth.  The neck was flexed so as to expose the right suboccipital region as well as the left and right parietooccipital regions.  The posterior aspect of the calvarium was shaved and prepared in the usual manner with Betadine soak scrub followed by Betadine paint.  This was done only, of course, after fiducial were registered in planning and an excellent accuracy was obtained with the Stealth system.  Sterile drapes were applied and the accuracy of the system was confirmed.  A biparietal incision was performed.  A linear incision was chosen so as to increase her chances of successful wound healing and that she is status post whole brain radiation.  A biparietal craniotomy was carried out, carrying about 1 cm over toward the right side and about 4 cm over to the left side as guided by the Stealth stereotactic system.  The dura was opened and reflected back to the midline.  An inner hemispheric approach was used to reach the very large metastatic tumor.  This was very delicate removing the tumor and the co-surgeons switched off to spare one another during the more delicate parts of the operation to remove the tumor.  The tumor was wrapped around and included the choroidal vessels.  At least one choroidal vessel was sacrificed in order to obtain a gross total excision of the tumor on the parietal occipital region.  Bleeding was quite vigorous in some of the arteries and finally, however, was completely controlled.  Complete removal of the tumor was confirmed by intraoperative ultrasound.