This document contains detailed information about the anatomy of the thorax provided by Dr. Sherif Fahmy. It discusses the anterior mediastinum, middle mediastinum, and posterior mediastinum. It also describes the descending thoracic aorta, branches of the descending thoracic aorta, the azygos and hemiazygos veins, the thoracic duct, lymph nodes of the thoracic wall and cavity, and lymph drainage of the thorax. Diagrams and descriptions are provided for each anatomical structure and region.