Abstract
We report a case of dural-based intracranial primary mesenchymal chondrosarcoma, initially thought to be a meningioma. This rare tumor should be included in the differential diagnosis of an aggresive dural-based lesion occurring in a young adult. A 27-year-old man presented with headache, nausea and vomiting, first experienced months earlier. Pre-enhanced CT revealed the presence of a well-marginated isodense mass with dense calcifications in the frontoparietal convexity, while MR images depicted a lobulated extra-axial mass with peritumoral edema. At T1-weighted imaging, the signal intensity of the mass was slightly low or than that of gray matter, while T2-weighted imaging demonstrated heterogeneous high signal intensity. Some portions of the tumor showed low signal intesnity at all sequences, suggesting the presence of calcification. After the injection of contrast medium, heterogeneous enhancement was observed. We report the radiologic findings of an intracranial primary mesenchymal chondrosarcoma, confirmed pathologically.
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