• Korean Journal of Head & Neck Oncology
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• v.31 no.2
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• pp.70-73
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• 2015

Acute suppurative thyroiditis is rare, infectious thyroid disorder because the thyroid gland is resistant to infection. We report a 26-year-old man with acute suppurative thyroiditis due to a pyriform sinus fistula. He presented with anterior neck swelling and tenderness for 2 weeks. Antibiotic treatment failed to improve his symptoms and signs. Diagnosis was made by bariums studies, computed tomography scan and endoscopic examination. The pyriform siuns fistula was successfully treated by chemical cauterization, partial thyroidectomy and ligation of fistula tract.

• Korean Journal of Bronchoesophagology
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• v.6 no.1
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• pp.96-101
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• 2000

It is commonly believed that the branchial anomalies are remnants of the branchial apparatus. Third and fourth branchial pouch anomaly is an extremely rare disease involving the branchial apparatus. Virtually mostly reported cases have been on the left side and has been identified in recurrent suppurative thyroiditis, retropharyngeal abscess and repeated episodes of cellulitis, neck swelling, lateral neck fistula. Recently the authors have experienced a case of left piriform sinus fistula accompanied with left suppurative thyroiditis, presumably of fourth branchial origin in a 50-years old male patients, which was successfully treated with coagulation, and so report this case with summary of branchial anomaly by the some review of the literatures.

• Korean Journal of Head & Neck Oncology
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• v.17 no.2
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• pp.234-237
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• 2001

Pyriform sinus fistula is a rare anomaly arising from 3rd or 4th branchial apparatus and has been recognized as one cause of acute suppurative thyroiditis or acute deep neck infection. Pyriform sinus fistula must be considered when a clinician is encountered recurrent left lower neck abscess and a history of repeated incision and drainage. The confirmation of the diagnosis is made when the fistula tract is identified on a barium swallow study and when the internal orifice of the fistula is found at the apex of pyriform sinus on laryngoscopic examination. A complete excision of the fistula tract has been proposed as a treatment of choice. However, in some cases it is very difficult to resect the tract completely because of severe inflammation and repeated drainage procedure. We present three cases of pyriform sinus fistula which are successfully treated by laryngomicroscopic chemocauterization using synthetic fibrin and $AgNO_3$.