This is a small book containing various aspects of thyroid gland disorders. Congenital hypothyroidism chapter emphasizes early diagnosis in prevention of irreparable damage to growth and brain of infants. Role of nuclear medicine in diagnosis and treatment is outlined. Last few chapters deal with congenital hypothyroidism, thyroid carcinoma, its diagnosis, treatment and preservation of posterior parathyroid gland during thyroid surgery. The purpose of the book is to disseminate knowledge on thyroid diseases. It will be a good reference book both for students of medicine and general practitioners.