Surgery After thyroidectomy for medullary carcinoma of thyroid, which is impoant for determining recurrence of tumour: September 2009 A Thyroglobulin B TSH C Carcinoembryonic antigen D Thyroxine levels 💡 Explanation After thyroidectomy for medullary carcinoma of thyroid, which is impoant for determining recurrence of tumour: September 2009 ✓ Correct Answer: C. Carcinoembryonic antigen