Patients who have consent to undergo to total thyroidectomy with sutureless technique (regardless of attending to study or not) for benign thyroid diseases in the institution are asked to participate to this study. Patients are informed that participating to this study will not alter their treatment method. Patients were operated either with Ligasure SmallJaw or Harmonic Focus according to availability in hospital. Same surgical team performed all operations and they did not know if the patient was participated in study or not.