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Axial CT angiography image (a) of a 57-year-old male patient shows a regular-shaped hyperdense hemangiopericytoma (arrows) narrowing the airway. The lesion is located in the larynx, covering the left paraglottic space. T2-weighted axial MRI (b) shows intermediate signal, and postcontrast coronal magnetic resonance (MR) angiography multiplanar reconstruction arterial phase image (c) clearly shows the lesion (arrows).
