What are the major parts of endocrine system?

pituitary, thyroid, parathyroid, adrenal, hyperparathyroidism, hypothyroidism, hyperthyroidism, graves’ disease, goiter, thyroid nodules, adrenal nodules, thyroid cancer, parathyroid cancer, adrenal cancer, a fine needle aspiration biopsy, continuous interoperative nerve monitoring, rapid intraoperative thyroid assay