General topography of the superior mediastinum (dave's notes)

Question 1

Summarise the general topography of the superior mediastinum

Answer 1

Veins on the left, arteries on the right; hence great asymmetry in th thorax.

Question 2

Veins distend more than arteries. What is the clinical significance of this relating to the superior mediastinum?

Answer 2

There is more dead space on the left, hence growths and collections are more likely to form on the right hand side.

Question 3

Describe the shape and boundaries of the superior mediastinum

Answer 3

Wedge shaped, with the anterior boundary being the manubrium, and the posterior boundary being the upper four thoracic vertebra.

Question 4

What does the thoracic inlet contain?

Answer 4

The midline is wholly occupied by the trachea and oesophagus. The apices of the lungs lie laterally.