Radiograph of Chest, G1.23, Anatomy, Thorax, Thoracic Contents

Radiograph of Chest, G1.23, Anatomy, Thorax, Thoracic Contents

Widening Mediastinum (> 8cm on PA CXR)

• aortic aneurysm

• aortic dissection

• hilar lymphadenopathy 

• inhalational anthrax. A widened mediastinum was found in 7 of the first 10 victims infected by anthrax (Bacillus anthracis) in 2001.

• esophageal rupture - presents usually with pneumomediastinum and pleural effusion. It is diagnosed with water soluable swallowed contrast.

• mediastinal mass

• cardiac tamponade

• pericardial effusion

• thoracic vertebrae fractures in trauma patients.

Trauma Post head-on collusion MVA -  bleeding into the Mediastinum after 

Laceration of the Large Vessels such as the Aorta or the SVC

Lymphoma enlarges the Mediastinal Lymph nodes

Cardiac hypertrophy widens the Inferior Mediastinum

Anatomy: Radiograph of Chest

Image A: A normal chest radiograph. Image B: Q fever pneumonia.
ICD-10 code:
ICD-9 code:	87.3-87.4

Front of thorax, showing surface relations of bones,lungs (purple), pleura (blue), and heart (red outline). The location of best auscultation for each heart valve are labeled with "M", "T", "A", and "P".

First heart sound: caused by atrioventricular valves - Mitral(M) and Tricuspid (T).

Second heart sound caused by semilunar valves -- Aortic(A) and Pulmonary/Pulmonic (P).