Abstract
<div><!--block-->Objective: Decision making about clinically significant lymph nodes (LN) is crucial. We elaborated the mediastinal LNs based on location, size and age groups. <br><br>Material and Method: Contrast enhanced chest computed tomography scans of 150 children who were referred to the radiology department after trauma, were evaluated retrospectively. All participants were divided into five age groups (0-24, 25-60, 61120, 121-180 and 181-216 months) which included thirty children each. We documented the shortest and longest axis diameters of the largest LNs and their location along with the age and gender of the children. Kolmogorov-Smirnov test, t test, Spearman’s correlation analysis assessment and descriptive statistics were expressed using SPSS 22. <br><br>Results: Mean ages were 11.53±10.1, 39.4±11.1, 84±15.9, 154.9±17.6, 190±9.3 months in consecutive age groups and 96±69.17 months in general. The most frequent locations with detectable LNs were subcarinal (n:98, 64%), right lower paratracheal (n:88, 57%), right tracheobronchial (n:82, 56%), right upper paratracheal (n:75, 49%) and left tracheobronchial (n:61, %39) lymphatic stations. Mean short and long axis diameters were 3.97±1mm (interquartile range:3.4-5.2) and 7.48±1.98mm (interquartile range:6.3-9.1) among detected 648 LNs, respectively. Both short and long axis diameters of LNs in low cervical, prevascular, subcarinal, right-left paratracheal and right-left tracheobronchial locations were correlated with the age (p<0.05). Both short and long axis diameters of subcarinal LNs (4.78±1.05mm, 9.30±1.8mm) were significantly larger than right lower paratracheal (4.03±0.9mm, 7.94±1.6mm; p:0.001), right tracheobronchial (4.42±1.26mm, 8.59±2.1mm; p:0.04) and right upper paratracheal LNs (3.64±0.79mm, 7.1±1.49mm). <br><br>Conclusion: Being aware of the size range for normal mediastinal LNs according to ages and locations would facilitate management and reduce unnecessary interventions and medications.</div>
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