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Fig 6. A, Axial T1-weighted postcontrast MR image in a 39-year-old man with a heterogeneous enhancing mass causing expansion of the sphenoid sinus (arrows) 4 years after radiation therapy. B, Axial T2-weighted MR image in the same patient showing a heterogeneous mass (arrows) with foci of very low T2 signal intensity presumed to be old hemorrhage.
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