Synchronized occurrence of oncocytic variant of papillary carcinoma of the thyroid and esophageal squamous cell carcinoma metastasis: case report

摘要

Metastasis to the thyroid is extremely rare. In recent years, there is an increase in metastasis to the thyroid. This may be related with common use of the fine-needle aspiration biopsy. Synchronized occurrence of the oncocytic variant of papillary carcinoma of the thyroid and metastasis into thyroid, especially of esophageal origin, is very rarely seen. We present a rare case of a 56-year-old female in whom a primary esophageal squamous cell carcinoma gave rise to a metastatic palpable mass in the left lobe of thyroid gland and oncocytic variant of papillary carcinoma of the thyroid in the right lobe of thyroid gland.