Brain metastases. Presurgical planning stealth enhanced CT of brain. Enhanced MRI of brain:50 cc of Omnipaque is administered for this exam.Stealth post infused CT of brain for surgical planning is performed.Examination identifies a left inferior frontal lobe ring enhancing tumor likely a metastatic lesion measuring 7.7 x 7.6-mm in size on axial image 101 surrounding vasogenic edema is again identified. This lesion measures minimally smaller than MRI exam and this is believed to be secondary to difference in technique between the two studies. A second enhancing lesion overlapping the interhemispheric cortex of left frontal lobe with no necrosis however with subtle surrounding vasogenic edema. This lesion measures approximately 8.5 times 5-mm in size. Not significantly different from prior exam.This is study also demonstrate a third lesion in the right posterior temporal -- occipital junction measuring 7.4 times 8-mm in size on axial image 77.
1.Examination demonstrates previously noted two metastatic foci in the left frontal lobe similar to what was noted on prior exam.2.A third metastatic focus in the right posterior temporal -- occipital junction measuring 7.4 times 8-mm in size on axial image 77. 3.The new third metastatic lesion was not identified on prior post infused MRI images.