Clinical question: Preop for biopsy of brain lesion. Signs and symptoms: Headache. Pre-and post enhanced stealth brain MRI:Examination is performed as a treatment/surgical planning study and is not a complete diagnostic test. There are also not prior exams for comparison.Within the indication a large irregular, necrotic and with irregular homogeneous pattern of enhancement superficially in the right posterior temporal lobe measuring at least at 40 x 38-mm in transaxial dimensions. The mass grossly extensive surrounding vasogenic edema and mass-effect resulting in mild deviation of the midline to the left. No evidence of ventriculomegaly.A second slightly smaller similar type mass is also present in the left posterior parietal measuring at least at 30 x 32-mm. This lesion also demonstrates fairly extensive surrounding vasogenic edema and resultant lesion or mass effect. Findings are suggestive of metastatic lesions. No additional foci of parenchymal, leptomeningeal or calvarial enhancement.
1.Enhancing necrotic metastatic lesion measuring at 40 x 38-mm in the right posterior temporal lobe.2.Enhancing necrotic metastatic lesion in the right posterior parietal lobe measuring at 30 x 32-mm.3.Metastatic lesions and surrounding vasogenic edema results in subtle leftward deviation of midline without ventriculomegaly.