Thyroid nodules

Patient: My mother age 57, has a large solid-cystic nodule left lobe thyroid, which is increasing in size. FNAC done outride area shows benign colloid nodule. Thyroid scan also done which showed cold nodule. In view of the increasing size doctor has recommended surgery of left, whereas small nodules on other side as well. please suggest. should i go with the doctors advice my mother has become very tense hearing abt the surgery.