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PT  - JOURNAL ARTICLE
AU  - Park, N.H.
AU  - Park, H.J.
AU  - Park, C.S.
AU  - Kim, M.S.
AU  - Park, S.I.
TI  - The Emerging Echogenic Tract Sign of Pyriform Sinus Fistula: An Early Indicator in the Recovery Stage of Acute Suppurative Thyroiditis
AID  - 10.3174/ajnr.A2015
DP  - 2011 Mar 01
TA  - American Journal of Neuroradiology
PG  - E44--E46
VI  - 32
IP  - 3
4099  - http://www.ajnr.org/content/32/3/E44.short
4100  - http://www.ajnr.org/content/32/3/E44.full
SO  - Am. J. Neuroradiol.2011 Mar 01; 32
AB  - SUMMARY: 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. ASTacute suppurative thyroiditisUSsonography