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CONSTRICTIVE PERICARDITIS

“ Thickened pericardium restricts diastolic ventricular filling, and the end result is cardiac failure.  The aetiology includes sarcoidosis...

Thickened pericardium restricts diastolic ventricular filling, and the end result is cardiac failure. 
The aetiology includes sarcoidosis, tuberculosis (TB), chronic renal failure, rheumatic fever, trauma and radiation.
Plain film

 Pericardial calcification (50%) and pleural effusions
•  Pericardial effusion
•  No pulmonary oedema

CT

•  Pericardial thickening >4 mm suggests pericarditis (normal 2 mm, excludes pericarditis).
•  Pericardial effusion.
•  Findings may be isolated to one side of the heart.
•  Pericardial enhancement with contrast.

MRI
•  Useful for distinguishing pericardial thickening from pericardial effusion.