A 26 year woman presents with a palpable thyroid nodule, and needle biopsy demonstrates amyloid in the stroma of the lesion. A cervical lymph node is palpable on the same side as the lesion. the preferred treatment should be :

Answer is C (Total Thyroidectomy and Modified neck dissection on the side of enlarged lymph node) : Presence of thyroid nodule along with palpable cervical lymph nodes and amyloid histologically is clearly indicative of Medullan, variety of Carcinoma Thyroid. Treatment of Medullary Carcinoma Thyroid : Total thyroidectomy + Resection of involved lymph nodes by radical / modified radical neck dissection.