Sistrunk Procedure on Malignant Thyroglossal Duct Cyst

Area of Science:

• Otolaryngology
• Endocrinology
• Surgical Oncology

Background:

• Thyroglossal duct cysts arise from incomplete obliteration of the thyroglossal duct during fetal development.
• Malignant transformation within these cysts is exceptionally rare, occurring in less than 1% of cases.
• Management strategies for thyroglossal duct cysts with suspected malignancy remain debated due to their rarity.

Observation:

• A 46-year-old male presented with a painless, growing neck mass over six months.
• Initial evaluation revealed no symptoms of airway compromise, dysphagia, voice changes, weight loss, or hyperthyroidism.
• Imaging (ultrasound and CT) identified a complex cystic mass consistent with a thyroglossal duct cyst.

Findings:

• Histopathological examination post-Sistrunk procedure confirmed a thyroglossal duct cyst with an incidental follicular variant of papillary thyroid carcinoma.
• The patient experienced no tumor recurrence or surgical complications at the latest follow-up.
• Fine needle aspiration biopsy may not always provide definitive results for these complex cases.

Implications:

• This case highlights the importance of thorough pathological examination of thyroglossal duct cysts, even in the absence of suspicious clinical features.
• Comprehensive physical and imaging assessments are crucial for guiding management decisions.
• Early detection and surgical intervention appear effective in managing malignant transformation within thyroglossal duct cysts.