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Axial T1-weighted postcontrast MR imaging of a 54-year-old man with lymphoid hyperplasia. MR imaging shows a smooth band with mild enhancement in the right side of the walls of the nasopharynx (arrows), extending from the adenoid (arrowhead), which is asymmetric in thickness compared with the left side and had been misdiagnosed as positive for NPC by MR imaging (grade 3).
