Treatment response, as determined by axial T1-weighted contrast-enhanced MRI, in a 40-year-old male NPC patient with a small tumor coexisting with hypertrophic adenoids. A, before treatment, a small tumor was confined to the mucosa of the left pharyngeal recess (long arrow), and hypertrophic adenoids were located in the posterior superior and roof of the nasopharyngeal wall (short arrow). B, 10 days after the end of neoadjuvant chemotherapy, a PR was achieved for the tumor (long arrow). C, 3 months after the end of chemoradiotherapy, a CR was achieved for the tumor. Stable disease (SD) is demonstrated for hypertrophic adenoids after treatment (short arrows in B and C).