Papillary carcinoma arising from thyroglossal duct cyst with cervical lymph node metastasis

Thyroglossal duct cyst carcinoma is uncommon. Its prevalence is less than one percent. Papillary carcinoma is the most common pathologic finding of the thyroglossal duct cyst carcinoma. Metastasis of the cervical lymph node is less common. Its prevalence is less than 8%. A 38-year-old woman presented with a complaint of painless mass in the midline of the neck. Ultrasonography of the neck revealed a solid cystic mass, measuring 5.5 × 2.5 cm in the submental area. Ultrasonography of the neck additionally revealed suspicion lymph node at bilateral level Ib. A preoperative Computed Tomography (CT) showed a 4 cm size MIX heterogeneous lesion in the anterior left-sided hyoid bone. The patient underwent sistrunk surgery, which was the result of the patient's frozen section papillary carcinoma arising from the thyroglossal duct cyst. The patient had local metastasis to the neck, so she underwent total thyroidectomy and central N-D surgery and bilateral modified radical N-D. Diagnosis of thyroglossal duct cyst carcinoma before surgery is unusual. The definitive diagnosis is often after surgery and is based on the patient's histopathological findings. The best surgical procedure is sistrunk. But if the patient has local metastasis to the neck, total thyroidectomy and modified radical N-D are performed.