Differential Diagnosis for Recurrent Suppurative Thyroiditis
Single most likely diagnosis
- Fistula between the pyriform sinus and the thyroid gland: This is the most likely diagnosis because recurrent suppurative thyroiditis in children is often associated with a congenital fistula connecting the pyriform sinus to the thyroid gland. This fistula can allow bacteria to enter the thyroid gland, leading to recurrent infections.
Other Likely diagnoses
- Thyroglossal duct cyst: Although less common, a thyroglossal duct cyst can become infected and present with symptoms similar to recurrent suppurative thyroiditis. The cyst is a remnant of the thyroglossal duct, which is formed during thyroid gland development.
- Bronchial anomalies with ectopic tissue: In some cases, bronchial anomalies can lead to the presence of ectopic tissue, including thyroid tissue, which can become infected and cause recurrent suppurative thyroiditis.
Do Not Miss diagnoses
- Papillary thyroid carcinoma: Although rare, papillary thyroid carcinoma can present with recurrent infections or abscesses, making it a critical diagnosis not to miss. Early detection is essential for effective treatment.
- Thyroid abscess due to other causes: Other causes of thyroid abscess, such as bacterial or fungal infections, can have serious consequences if left untreated. It is essential to consider these possibilities to ensure prompt and appropriate treatment.
Rare diagnoses
- Ectopic thyroid tissue in the bronchus: This is a rare condition where thyroid tissue is located within the bronchus, which can lead to recurrent infections or other respiratory symptoms.
- Congenital anomalies of the thyroid gland: Other congenital anomalies, such as thyroid gland duplication or aberrant thyroid tissue, can also lead to recurrent suppurative thyroiditis, although these are rare occurrences.