Metastatic papillary thyroid carcinoma in branchial cyst

• 發表在: Surgical Chronicles
• 主要作者: 2-s2.0-85016396761
• 格式: Article
• 語言: English
• 出版: Surgical Society of Northern Greece 2016
• 在線閱讀: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85016396761&partnerID=40&md5=44fb5a37e3d599adabb4b181133e0039

Papillary thyroid carcinoma is the commonest well differentiated thyroid carcinoma comprising about 80-85%1 of all thyroid malignancy. It has an excellent prognosis with survival rate of more than 95% at 25 years1. However, incidence of thyroid malignancy from this ectopic thyroid tissue is extremely rare and may manifest as a spectrum of thyroid disease. Thyroid malignancy arising from ectopic thyroid tissue is extremely rare with only few reported cases in literature. Papillary thyroid carcinoma arising from ectopic thyroid tissue is most commonly reported in the branchial cyst. The questions that perplexing about it are; is it arising de novo in the ectopic thyroid tissue or is it reflects a metastasis? Here we report a 43-year-old man incidentally found to have an ectopic papillary thyroid carcinoma arising from the left branchial cyst following excision of the cyst. Examination of the neck revealed a mass arising from left sided of the neck. A pre operative computed tomography (CT) scan only showed a large branchial cyst compressing on the left thyroid gland and displacing left carotid sheath. A total thyroidectomy with left central neck dissection was performed showed a focus of 22x12x9mm tumour at left lower lobe with three out four left central neck nodes involvement.