Endocrine Abstracts

Background: Anaplastic thyroid carcinoma (ATC), which is one of the most aggressive endocrine tumors. Primary thyroid carcinoma typically does not interfere with thyroid function and presentation of ATC with thyrotoxic state is extremely rare. We present here an ATC patient who is complicated with thyrotoxicosis.Case: A 69-year-old man presented with neck swelling and pointed out thyroid tumor with calcification two years ago. He appeared general fatigue...