thyroid. endocrine gland. illness of the endocrine system. thyroid nodes, autoimmune thyroiditis, diffuse toxic goiter

anatomical anatomy awareness biology body campaign cancer care cartilage day diagram diffuse disease drawing education endocrine endocrinologist female function gland goiter health healthcare hormone human hyperthyroidism hypothalamus illustration larynx man medical medicine neck nodules organ parathyroid poster science secretion section sickness sign symbol system throat thyroid thyroiditis toxic trachea vocal