RT Book, Section A1 Jameson, J. Larry A1 Fauci, Anthony S. A1 Kasper, Dennis L. A1 Hauser, Stephen L. A1 Longo, Dan L. A1 Loscalzo, Joseph SR Print(0) ID 1167067378 T1 Diseases of the Mediastinum T2 Harrison's Manual of Medicine, 20e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260455342 LK accessmedicine.mhmedical.com/content.aspx?aid=1167067378 RD 2024/04/24 AB Key disease processes in the mediastinum include mediastinitis and mediastinal masses. Pneumomediastinum is an additional mediastinal abnormality that can result from alveolar rupture, esophageal perforation, or dissection of air from the neck or abdomen. Diagnosed by chest radiography, pneumomediastinum typically does not require specific treatment.