Min Kyung Lee1, Eun Young Kim2, Yu Mi Jeong1, Jeong Ho Kim1, Hye-Young Choi1. 1. Department of Radiology, Gachon University Gil Hospital, #1198, Guwol-dong, Namdong-gu, Incheon, 405-760, Republic of Korea. 2. Department of Radiology, Gachon University Gil Hospital, #1198, Guwol-dong, Namdong-gu, Incheon, 405-760, Republic of Korea. oneshot0229@gmail.com.
Abstract
PURPOSE: To determine the prevalence of paratracheal air cysts (PACs) in the pediatric population. METHODS: The chest CT images of pediatric patients between July 2007 and December 2014 were retrospectively reviewed for the presence and imaging findings of PACs. In addition, the association between PACs and the presence of bronchiectasis and air cystic pulmonary lesions were evaluated. RESULTS: Among a total of 819 pediatric patients (males = 527, 64.3 %), the overall prevalence of PACs was 1.3 % (n = 11; 1.7 % for infants, 0.4 % for children, and 1.9 % for adolescents). The presence of PACs showed no association with gender, age groups, or the presence of bronchiectasis and air cystic pulmonary lesions (P = 0.56, 0.88, 0.57 and 0.89, respectively). All PACs were located at the right side of the trachea at the thoracic inlet, and the median transverse diameter was 3.7 mm (range 2.0-7.0 mm); one PAC showed septation, and 27.3 % of PACs had communication with the trachea. CONCLUSION: In the pediatric population, the prevalence of PACs is 1.3 % as detected by chest CT. Knowledge of the prevalence and imaging findings of PAC would be useful to prevent confusion with pneumomediastinum or other cystic lesions in pediatric patients.
PURPOSE: To determine the prevalence of paratracheal air cysts (PACs) in the pediatric population. METHODS: The chest CT images of pediatric patients between July 2007 and December 2014 were retrospectively reviewed for the presence and imaging findings of PACs. In addition, the association between PACs and the presence of bronchiectasis and air cystic pulmonary lesions were evaluated. RESULTS: Among a total of 819 pediatric patients (males = 527, 64.3 %), the overall prevalence of PACs was 1.3 % (n = 11; 1.7 % for infants, 0.4 % for children, and 1.9 % for adolescents). The presence of PACs showed no association with gender, age groups, or the presence of bronchiectasis and air cystic pulmonary lesions (P = 0.56, 0.88, 0.57 and 0.89, respectively). All PACs were located at the right side of the trachea at the thoracic inlet, and the median transverse diameter was 3.7 mm (range 2.0-7.0 mm); one PAC showed septation, and 27.3 % of PACs had communication with the trachea. CONCLUSION: In the pediatric population, the prevalence of PACs is 1.3 % as detected by chest CT. Knowledge of the prevalence and imaging findings of PAC would be useful to prevent confusion with pneumomediastinum or other cystic lesions in pediatric patients.
Entities:
Keywords:
Multidetector computed tomography; Paratracheal air cyst; Pneumomediastinum; Tracheal diverticulum
Authors: Ha Yeon Kim; Kyung Hee Lee; Yeo Ju Kim; Ha Young Lee; Ga Ram Kim; Yong Sun Jeon; Jung Soo Kim; Young Sam Kim; Jun Ho Kim Journal: Biomed Res Int Date: 2017-03-15 Impact factor: 3.411