A 35 year old male has a CXR following a road traffic collision as part of a trauma series. This reveals a smooth margined opacity at the right cardiophrenic angle but no other abnormality. Subsequent trauma CT for possible abdominal injuries shows the right cardiophrenic angle mass to be well defined and of homogenously low density (HU 8) with no enhancement.
What is the most likely diagnosis?
Correct Answer:
Pericardial cyst
Morgagni hernia | |
Pericardial fat pad | |
Pericardial cyst | |
Lymphadenopathy | |
Chyle leak |
Pericardial cysts are usually discovered incidentally during examinations performed for other reasons. Their imaging appearances are as described. The other lesions listed would have different attenuation and/or enhancement characteristics.