The emerging echogenic tract sign of pyriform sinus fistula: an early indicator in the recovery stage of acute suppurative thyroiditis.
AST is commonly associated with pyriform sinus-thyroid fistula in children. Radiologic findings of AST are documented in a few reports. We report a new sign we term the "emerging echogenic tract sign," which reflects a patent air-containing pyriform sinus-thyroid fistula on follow-up US. Recognition of this sign is an important finding suggesting an associated pyriform sinus-thyroid fistula in a patient with AST and also suggesting the adequate timing of barium esophagography to confirm the fistula.
Park
N H
NH
Department of Diagnostic Radiology, Myongji Hospital, Kwandong University, College of Medicine, Goyang, South Korea. nhpark904@kd.ac.kr
Park
H J
HJ
Park
C S
CS
Kim
M S
MS
Park
S I
SI
D002648:Child; D005260:Female; D020199:Hematoma, Subdural, Acute / Q000150:complications* / Q000000981:diagnostic imaging*; D006801:Humans; D056144:Pyriform Sinus / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D016156:Respiratory Tract Fistula / Q000150:complications* / Q000000981:diagnostic imaging*; D014463:Ultrasonography / Q000379:methods*