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Case 1. Chordoma in the left nasal cavity in a 6-year-old boy. The tumor is an expansible and well-defined soft tissue mass with linear calcification in the left cavity on CT images (A). Compared with adjacent muscles, the tumor demonstrates hypointensity on spin-echo T1-weighted images (B), hyperintensity on T2-weighted images (C) with clear margins. Hypointense septa (arrow) can be seen on T2-weighted images.
