Thyroid structure, development and developmental abnormalities; thyroid physiology; tests of thyroid function; clinical examination; hyperthyroidism; management of thyroid nodule; thyroid cancer; thyroiditis; simple goiter (non-endemic non-toxic goiter) and multinodular goiter; iodine deficiency disorders, endemic goiter and endemic cretinism; changes in thyroid function tests in physical and psychiatric diseases; radiation and the thyroid in man.