"The existence of retropharyngeal lymph nodes was first described by the French anatomist Henri Rouvière (1876-1952) in 1928 4,7."
"usually located at the C2-C3 level"
"usually located more superiorly, at the skull base (C1) or C1-C2 level"
Expected headings
"Differential diagnosis"
"less common: visible on imaging in only a minority of children and rarely present in adults 2; usually unilateral"
"more common: found in the vast majority of children and most adults; usually bilateral"
"The retropharyngeal lymph nodes decrease in size and number with age 3. In one study of healthy subjects using MRI, the upper limit of normal (2 standard deviations above the mean) of minimal axial diameter of lateral retropharyngeal lymph nodes was 9 mm in children (6-19 years), 6.4 mm in young and middle aged adults (20-38 years), and 5.2 mm in older adults (42-74 years) 3."