METASTATIC THYROID PAPILLARY CANCER, ASSOCIATED WITH BRANCHIAL CYST. CASE REPORT

Abstract

Papillary thyroid cancer is the most common cervical neoplasia. On the branchial abnormalities, the second arch cysts are the most frequent. The branchial cyst with a metastasis of thyroid cancer, is uncommon. In the world literature, there is no consensus, total thyroidectomy is recommended, and cervical emptying is only performed when indicated.
We present the case of a 24 years old male. Two months of increase and accelerated left cervical volume of 10 cm, without pain. Physical examination without palpable cervical lymphadenopathy, with a regular, solid, non-painful mass of 10 cm, no fixation to deep structures. Ultrasound and cervical tomography with cystic cervical mass of 10 cm, multiple thyroid nodules, the largest is cystic of 0.7 cm in left thyroid lobe. Fine needle biopsy of the mass reports cyst compatible material. Cervical mass resection is performed and histopathology reports a brachial cyst with metastasis of primary papillary thyroid primary of 1.8 cm. Total thyroidectomy is performed, there is no evidence of lymphadenopathy. Histopathology reports papillary carcinoma. Good post-operative evolution and reference was made for management with radioactive iodine.