Sinonasal Chondrosarcoma


KEY FACTS

Imaging

  • Arises from maxilla, nasal septum, and skull base

    • Nasal septum location: Posterosuperior vomer

  • Bone CT: Chondroid matrix calcification and narrow bony transition zone

    • 50% with chondroid matrix

  • MR: Increased (high) signal on T2 images and heterogeneous enhancement

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