Sir since some months my mother's neck has swelled, and for that we have visited a doctor and he told to do usg of thyroid gland. And after that report, it reveals that right lobe of thyroid gland is diffusely enlarged by cystic degeneration with a small solid nodule. After that he has prescribed to do fnac of that nodule. The fnac report reveals :- suspicious for follicular neoplasm (bethesda category iv) sir what to do now pls suggest.