Recurrent acute suppurative thyroiditis in pediatrics: a case report.

Acute suppurative thyroiditis (AST) is a rare endocrinological emergency in pediatrics that may require immediate infectious disease and surgical intervention. It is generally associated with bacterial infections and, in some cases, congenital malformations of the branchial arch. We present the case of a 7-year-old girl with recurrent AST, in both episodes with cervical abscess formation, requiring intravenous antibiotics and surgical drainage. From the outset, a piriform sinus fistula was suspected, which was confirmed by direct laryngoscopy in the operating room during the hospitalization for the second episode. Chemical sclerosis of the fistulous tract was performed, with favorable evolution and no recurrence at follow-up. Although rare, this case highlights the importance of considering AST in the differential diagnosis of cervical masses in the pediatric population. It also encourages investigation of underlying causes such as congenital anomalies, which allows for early diagnosis and definitive treatment.