title: Diagnosis of pyriform sinus fistula in children via ultrasonography.
abstract: A pyriform sinus fistula is a rare congenital abnormality of the third or fourth branchial pouch that usually affects children. We report one case of the condition; ultrasound (US) imaged a heterogeneous mass with a hypoechoic area and air bubbles representing an abscess. Although these manifestations are rare, prominent and characteristic findings on US may facilitate the diagnosis of pyriform sinus fistula.
authors.affiliation: Shengjing Hospital of China Medical University, Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China.
authors.forename: Zhan
authors.initials: Z
authors.lastname: Liu
authors.forename: Shao-Shan
authors.initials: SS
authors.lastname: Tang
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D005402:Fistula / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D010608:Pharyngeal Diseases / Q000000981:diagnostic imaging*; D056144:Pyriform Sinus / Q000000981:diagnostic imaging*; D014463:Ultrasonography