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Fig 2. Noncontrast MR images show large nodular, submucosal masses along the pharyngeal walls, supraglottic larynx, and thickening of the tracheal wall with stenosis. Note the extensive involvement of the nasopharynx and oropharynx. A, Coronal T1-weighted MR image shows the pharyngeal masses (x) to have intermediate signal intensity. B, Coronal T2-weighted MR image shows the masses (x) to have low signal intensity. The signal intensities of the masses parallel those of skeletal muscle. C, Axial T2-weighted MR image shows the masses to have low signal intensity. There is marked narrowing of the laryngeal airway (arrow). D, Axial T2-weighted MR image shows marked low signal intensity thickening (arrows) of the tracheal walls.
