Intraventricular Meningioma
Well defined solid mass located in the trigonum of the left lateral ventricle. Mass is hyperdense (to brain parenchyma) and contains calcifications as seen on unenhanced CT. It enhances homogeneously after contrast and is well demarcated. There is some edema of the adjacent brain tissue. This is a case of Intraventricular Meningioma. Only about 2% of meningiomas are intraventricular, without dural attachment. Those arise from choroid plexus stromal cells. No MRI in this case due to pacemaker.
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