Introduction

Carcinomas with thyroglossal cyst localization have a low frequency, about 1% of patients present this disease; the most frequent histology is papillary thyroid carcinoma. We describe a case of papillary carcinoma of thyroglossal cyst.

Clinical case

A 54-year-old man with an anterior cervical tumor of six months of evolution, not mobile, not painful, with diameters of 3 × 5 cm. Thyroid ultrasound with right thyroid nodule TIRADS 4c and suspicious adenopathies in level VI. Total thyroidectomy + Sistrunk was performed, with pathological report of multifocal conventional variant papillary carcinoma. It infiltrated thyroid capsule and adjacent prethyroid muscles; right lobe tumor 2 × 1.5 × 1.3 cm, left lobe tumor 3.5 × 3 × 4 cm; then, I-131 dose was applied.

Discussion

There is no consensus regarding the ideal treatment of papillary carcinoma in the thyroglossal cyst, although Sistrunk surgery with total thyroidectomy seems to be the most appropriate one. As this is a rare presentation of well-differentiated thyroid cancer, it could be difficult to draw conclusions with a high level of evidence for its management, but they should be guided by current guidelines of well-differentiated thyroid cancer and decisions should be made in multidisciplinary teams.

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