The chest wall is a complex anatomic structure composed of muscles, bones, joints, and soft tissues that make up the area of the body between the neck and the abdomen. Pathologic processes that may involve the chest wall include congenital…
Mediastinitis refers to a focal or diffuse inflammation of the tissues located in the mediastinum. The mediastinum lies between the right and left pleural cavities and extends from the thoracic inlet to the diaphragm. Mediastinitis can be classified into acute…
Etiology, Prevalence, and Epidemiology Pneumomediastinum, also known as mediastinal emphysema, refers to the presence of free air or other gas in the mediastinal space. Pathologically, the major sources of entry of air to the mediastinum are (1) through the skin…
Aspiration refers to the misdirection of contents of the oral or upper gastrointestinal tract that have passed through the trachea and larynx and entered the lung. The diagnosis rests mostly on the history of presenting illness, medical history, vital signs,…
Respiratory infections are the most common illnesses occurring in humans and pneumonia is the leading cause of death due to infectious disease and the sixth most common cause of death in the United States. Pneumonia is an acute infection of…
Although many lung disorders can be diagnosed from the plain chest radiograph, its limitations in providing a definitive diagnosis are widely understood. Complicated chest radiographs, the lack of radiographic abnormalities in symptomatic patients, and the limitations of portable chest studies…