CTICasesLeft atrial calcification in rheumatic heart disease
Imaging findings
Chest radiograph and chest CT demonstrate severe calcification lining a massively dilated left atrium. On the radiograph, the enlarged left atrium forms the right heart border (double density sign) and elevates the hilum.
Key takeaways
Massive left atrial calcification is a classic complication of long-standing rheumatic mitral valve disease. The dilated left atrium can project past the right atrium, forming the right heart border.
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