Subtotal lobectomy : resection of part of a lobe. Total lobectomy : resection of whole of a lobe. Isthmusectomy : resection of the isthmus. Hemi thyroidectomy : total lobectomy + isthmusectomy. Subtotal thyroidectomy : 2 x subtotal lobectomy + isthmusectomy. Near total thyroidectomy : total lobectomy + isthmusectomy + subtotal lobectomy. Total thyroidectomy : 2 x total lobectomy + isthmusectomy.