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Axial T1-weighted postcontrast MR imaging of a 69-year-old man with benign lymphoid hyperplasia in the adenoid (arrows), which had been positive for NPC by endoscopy but was correctly diagnosed as benign by endoscopic biopsy and MR imaging on the basis of the symmetric alternating bands of marked and mild contrast enhancement causing a striped appearance to the enlarged adenoid (grade 2).
