Abstract: Objective To investigate the clinical picture,laboratory findings and imaging manifestations of paragonimus infection in children for improving the diagnosis of this disease in children. Methods Retrospective analysis was performed on the clinical picture,laboratory findings and imaging manifestations in 47 children confirmed or clinically diagnosed as paragonimiasis in our hospital between January 1,2016 and December 31,2019. Results Of the 47 patients,40 were boys, and 7 girls. The age ranged from 4 to 14 years old. All children were Yunnan nationalities,respectively from Zhaotong City(n= 42),Weshan district( n= 4) and Yuxi area( n= 1),and generally had history of consuming raw stream shrimps and crabs. The common symptoms included fever,cough,chest pain,headache,and abdominal pain. Laboratory studies indicated elevated peripheral blood eosinophils in 46 cases,and serum immunoglobulin IgE in 42 cases. Imaging examination revealed pleural effusion in 43 cases,and lung consolidation in 27 cases,in which " worm tunnel sign" was seen in 13 cases. Conclusion Combined diagnosis of paragonimus infection in children with routine blood studies and chest imaging as well as consideration of the epidemic history and clinical manifestations,can reduce misdiagnosis,and lead to early conclusion and early treatment.

Key words: Paragonimiasis, Children, Clinical features, Iconography, Worm tunnel sign