CTICasesCardiac Fibrosarcoma
Imaging findings
CT chest and MRI demonstrate a large, heterogeneous, rapidly growing mass surrounding the left atrium and pulmonary veins, with a component extending into the left atrial lumen. The mass shows avid first-pass perfusion enhancement. Pathological review confirmed a primary cardiac fibrosarcoma.
Key takeaways
Primary cardiac sarcomas (including fibrosarcomas) are rare, highly aggressive malignant tumors. They typically arise in the left atrium and can be misdiagnosed pathologically as benign myxomas on small biopsy samples. Rapid growth, local invasion of pulmonary veins, and perfusion enhancement help differentiate them from myxomas.
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