Objective: to investigate the relationship between thyroid hormone and remodeling of atrium and ventricle, and to explore the pathogenesis of hyperthyroid cardiopathy.

Objective to investigate the incidence of sporadic type of painless thyroiditis (SPT), to analyse its laboratory characteristics, and explore the influence of different treatments on prognosis.

Objective to evaluate the measurement of weight of thyroid gland in thyroidectomy of primary hyperthyroidism, and to provide evidence for the control of thyroid remains.