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MR study of lateral retropharyngeal lymph nodes at different ages
Ichiro Ogura1, Takashi Kaneda, Masataka Kato
1Department of Radiology, Nihon University School of Dentistry, Matsudo, Japan. iogura@mascat.nihon-u.ac.jp
Objective:
The purpose of this study was to investigate the age-related morphologic changes of the lateral retropharyngeal lymph nodes using MR imaging.
Study Design:
The maximal axial diameter of the nodes was measured on the MR image in 120 healthy subjects (younger group 6-19 years (n = 40), middle group 20-38 years (n = 48), older group 42-74 years (n = 32)). Between-group differences in the diameter of the nodes were analyzed.
Results:
Mean values of the maximal axial diameter of the nodes were 9.0 +/- 1.6 mm, 6.6 +/- 1.7 mm, and 5.3 +/- 1.6 mm, corresponding to younger group, middle group, and older group, respectively ( P <.01).
Conclusion:
The information obtained in the current study is useful for the differential diagnosis of normal and abnormal lateral retropharyngeal lymph nodes according to age.
