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A differentiated adenocarcinoma arising from the follicular cells of the thyroid gland. It is linked to radiation exposure and is the most common malignant thyroid lesion, comprising 75% to 80% of all thyroid cancers in iodine sufficient countries. Diagnostic procedures include: thyroid function tests, thyroid radioisotope scanning, thyroid ultrasound, and fine needle biopsy. Microscopically, the diagnosis is based on the distinct characteristics of the malignant cells, which include enlargement, oval shape, elongation, and overlapping of the nuclei. The nuclei also display clearing or have a ground glass appearance. Depending on the size and spread of the disease, surgical options include lobectomy, and partial or complete thyroidectomy. Adjuvant treatment options include: radioiodine therapy, TSH suppression and external radiation. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C4035\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C4035\' NCI Thesaurus)
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