Fig. 2
Representative false positive imaging findings of retropharyngeal lymph node. a Contrast-enhanced computed tomography shows a left false positive retropharyngeal lymph node (arrow). b T1-weighted gadolinium-enhanced magnetic resonance imaging shows a left false positive retropharyngeal lymph node (arrow). c Positron emission tomography-computed tomography shows an abnormal 18fluorine-fluorodeoxyglucose uptake with a standardized uptake value of 3.2, on a right retropharyngeal lymph node (arrow)