RT Journal Article SR Electronic T1 lung hydatid cyst from childhood to adulthood JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1698 DO 10.1183/13993003.congress-2020.1698 VO 56 IS suppl 64 A1 Sarra Ammari A1 Sarra Zairi A1 Mehdi Abdennadher A1 Imene Bouassida A1 Amira Dridi A1 Taher Mestiri A1 Hazem Zribi A1 Adel Maraghli YR 2020 UL http://erj.ersjournals.com/content/56/suppl_64/1698.abstract AB Introduction: Pulmonary hydatid disease affects rather younger and active population. Features and management of hydatid cyst may differ according to the concerned age group.The aim of this study was to compare the characterisitics of pulmonary hydatid cyst (PHC) in children and adults.Methods: A retrospective study including all patients managed for PHC during the year 2019 in our department of thoracic surgery was conducted. Group 1(G1), the group of children (age ≤18) was compared to group 2 (G2), the group of adults (age>18).Results: 71 patients were included.G1 included 13 children and G2 included 58 adults.The mean age of G1 was 14.07 years old [5-18] vs 42.56 years old [20-81] in G2.Symptoms were present in 100% of the cases in G1 vs 86% in G2.The most common symptoms were dyspnea (100% in G1 vs 56.8% in G2, with p=0.04), cough (92.3% in G1 vs 74.1% in G2) and Hydatoptosis ( 23% in G1 vs 18.9% in G2). PHC was bigger in the children group, mean size 10.3cm [6-21] in G1 vs 7cm [3-14] in G2 , p=0.037). Intact PHC was significantly associated to an age ≤ 18 years old (53.8% in G1 vs 17.2% in G2, p= 0.009). Based on surgical procedures performed, cytectomy was significantly more frequent in adults (67.2% in G2 vs 38.4% in G1, p=0.05) and pulmonary anatomical resections were significantly more frequent in children (15.3% in G1 vs 0.68% in G2, p=0.002).Conclusion: Compared to adults, PHC impacting children are rather discovered at a bigger size.Therefore, it may be life threatening in this age group and requires often major surgery for parenchymal resection.FootnotesCite this article as: European Respiratory Journal 2020; 56: Suppl. 64, 1698.This abstract was presented at the 2020 ERS International Congress, in session “Respiratory viruses in the "pre COVID-19" era”.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).