This book presents as teaching files a collection of cases of thyroid and parathyroid diseases seen at various high-volume endocrinology centers. The cases, most of which are accompanied by instructive images, have been selected in order to impart clinically relevant knowledge on the full range of endocrine disorders of thyroid and parathyroid origin. Accordingly, the book covers not only situations that are frequently encountered by the clinician in primary care, but also uncommon disorders and unusual presentations of common disorders. The comprehensive nature of the coverage will assist in resolving diagnostic dilemmas, and the reader will also find up-to-date information on disease management. The recommendations provided are based on current evidence-based clinical practice guidelines and are supported by relevant literature so as to harmonize available evidence-based protocols with current clinical practice. Thyroid and Parathyroid Diseases: A Case-Based Guide is designed to be thought provoking and to aid knowledge retention. Written by renowned experts in nuclear medicine, clinical endocrinology, oncology, and general surgery, it will appeal to specialists and residents in these fields.