Concurrent Hashimoto's thyroiditis is associated to less frequency of extrathyroidal extension in papillary thyroid carcinoma

Purpose: Papillary thyroid carcinoma (PTC) presenting with aggressive evidence such as extrathyroidal extension (ETE) is indicative of immediate surgical management. This study was aimed to investigate the difference of ETE identified between the patients diagnosed with PTC with and without concurrent histopathologically proven Hashimoto's thyroiditis (HT). Material and Methods: Totally 199 consecutive patients underwent total thyroidectomy combined with central cervical lymph node dissection between January 2015 and December 2015 were enrolled. All were pathologically confirmed with PTC. Medical record was revi…