Aspiration with or without lavage in the treatment of acute suppurative thyroiditis secondary to pyriform sinus fistula

Acute Suppurative Thyroiditis in Childhood: An Atypical Presentation

Neck stiffness is a common clinical sign in children presenting to the emergency department that may indicate a wide variety of diagnoses. Acute suppurative thyroiditis (AST) is an infection of the thyroid gland caused by a bacterium, virus, or, less commonly, fungus. It presents as an acute or subacute development of an anterior cervical mass, with associated inflammatory signs. The pressure upon neck muscles may be reflected as a limitation of cervical mobility. AST is often preceded by an upper respiratory tract infection, and pyriform sinus fistula is the most common predisposing factor. It is particularly uncommon in the pediatric age, with limited cases reported in the literature. Therefore, a heightened suspicion is required for proper diagnosis and timely intervention, due to its high mortality. Prompt treatment with broad-spectrum parenteral antibiotic therapy and drainage is mandatory to prevent the numerous complications associated, namely, mediastinitis and sepsis. We report the case of a two-year-old female child admitted with a two-week history of intermittent high-grade fever and sore throat, followed by prostration and limitation in neck movement on admission. Examination revealed neck stiffness with positive Kernig and Brudzinski signs. The laboratory tests showed elevated inflammatory parameters. Cranial computed tomography (CT) scan and lumbar puncture were normal. On day 2 after admission, an anterior cervical mass with slight signs of fluctuation was detected. Ultrasound was compatible with a hemorrhagic/overinfected thyroid nodule, and the patient was started on broad-spectrum antibiotics. Due to clinical worsening, a cervical CT scan was performed, which documented a thyroid abscess with extension into the retropharyngeal space. She underwent surgical drainage, and Streptococcus anginosus and mixed anaerobes were isolated, sensitive to ongoing antibiotherapy. On multidisciplinary follow-up, an esophageal barium study, laryngoscopy, and cervical magnetic resonance imaging (MRI) were performed, revealing no anatomical defects. AST is a rare disease in children, but potentially fatal, so its early recognition and treatment are essential. We aim to draw attention to this disease and its differential diagnosis to reduce the associated morbimortality.

Clinical Analysis of Acute Suppurative Thyroiditis in 18 Children

Objective

To summarize our clinical experience with the diagnosis and treatment of children with acute suppurative thyroiditis (AST).

Methods

We retrospectively reviewed the clinical data of 18 children with AST treated at our hospital between January 2009 and May 2022.

Results

There were 8 boys and 10 girls, aged 7.8 ± 3.8 years at admission. The main clinical manifestations were fever (88.9%), neck pain (100%), and neck mass (100%). Blood and pus cultures were performed in 9 and 15 patients, respectively. All blood cultures were negative, while positive pus cultures were noted in eight cases (six Streptococcus spp., one Staphylococcus spp., and one Streptococcus spp. and Staphylococcus spp. mixed infection). Additionally, all patients received antibiotic treatment: three received antibiotics alone, seven received antibiotics and ultrasound (US)-guided needle aspiration, seven received antibiotics as well as surgical incision and drainage, and one received antibiotics, US-guided needle aspiration in addition to surgical incision and drainage. Consequently, the average length of hospital stay in patients who received antibiotics and US-guided needle aspiration was 9.1±2.9 days compared to 14.0±2.0 days in patients in the antibiotics alone group and 13.0 ± 2.2 days in patients in the antibiotics and surgical incision and drainage group. Follow-up was conducted in 15 of the 18 patients. Three patients relapsed, and the prognosis of the other patients was good.

Conclusion

AST has atypical clinical symptoms at the early stage. Regular monitoring of the thyroid gland using ultrasonography is strongly advised in unsure cases. Antibiotics combined with US-guided aspiration is a safe, effective, and minimally invasive treatment for AST in children and can reduce hospital stay. However, surgery may be necessary, particularly in the presence of complications. It is strongly recommended that patients with recurrence be examined for anatomical abnormalities and undergo radical treatment.