A giant fibrinoid pericardial mass in a patient with rheumat
Rheumatoid arthritis (RA) is a chronic inflammatory disease of the joints, which may extend to extra-articular organs. Extra-articular manifestations have been considered as prognostic features in RA, and pericardial disease is one of the most frequent occurrences. Rheumatoid arthritis pericarditis is usually asymptomatic and is frequently found on echocardiography as pericardial thickening with or without mild effusion. Severe and symptomatic cases are rare, but pericardial masses are even rarer.

The patient was a 79-year-old man. Cardiac magnetic resonance imaging revealed a pericardial lesion measuring 10 × 9 × 6 cm with complex structures in its interior, which had compressive effects on the right atrium and right ventricle, severely limiting diastole. Late gadolinium enhancement of the lesion walls and pericardium suggested pericarditis. Surgical resection was performed, and a soft mass with liquid content was extracted. The patient recovered well with improvements in symptoms and the functional status. Histopathological studies ruled out neoplasm, vasculitis, and infection, and the entire mass showed fibrinoid material associated with fibrinoid pericarditis.

Source: European Heart Journal - Case Reports, ytz061

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