This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
A nodule of 2 cm in left thyroid diagnosed as papillary Ca. Treatment of choice is: 
Select and explain. 
A. Hemithyroidectomy, B. Total thyroidectomy, C. Thyroidectomy with radical dissection, D. Radiotherapy
B: Total thyroidectomy
Answer: B: Total thyroidectomy 
Explanation: Papillary adenocarcinoma accounts for 85% of cancers of the thyroid gland. The tumor usually appears in early adult life and presents as a solitary nodule. For papillary carcinoma over 1 cm, acceptable operations are near-total or total thyroidectomy. For solitary papillary carcinomas less than 1 cm, thyroid lobectomy is adequate treatment. Subtotal or paial lobectomy is contraindicated because the incidence of tumor recurrence is greater and survival is shoer. Ref: Clark O.H. (2010). Chapter 16. Thyroid & Parathyroid. In G.M. Dohey (Ed), CURRENT Diagnosis & Treatment: Surgery, 13e.