Mediastinal mass

Last revised by Rob Foley on 23 Jan 2021

Mediastinal masses may be caused by a wide variety of neoplastic and non-neoplastic pathologies. It is helpful to identify the location of the mass since this significantly reduces the breadth of the differential diagnosis. 

There are four conceptual compartments of the mediastinum which are dictated by their relationships to the thoracic plane and pericardium:

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Cases and figures

  • Figure 1: mediastinal anatomy
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  • Figure 2: mediastinal compartments (annotated CT)
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  • Case 1: superior mediastinal mass
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  • Case 2: middle mediastinal mass
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  • Case 3: posterior mediastinal mass
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