Jan. 08, 2023
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(Left) An unenhanced, sagittal, T1-weighted MRI of the spine shows subtle enlargement of the conus medullaris by a lesion isointense to the spinal cord. (Right) Following intravenous administration of contrast, a T1-weighted MRI of the same area shows uniform enhancement of an intramedullary mass, consistent with a metastatic tumor. (Contributed by Dr. Marc D Winkelman.)