Cardiac malignant tumours are extremely seldom in clinic, especially
primary cardiac lymphomas. Due to the complexity of tumor, cardiac
malignant tumours are characterized by multiple clinical and imaging
manifestations. Consequently, cardiac malignant tumours may be easily
misdiagnosed or neglected before histopathologic examinations. In this
case, we reported a patient presented with intermittent bradyarrhythmia
and was diagnosed as myxoma by imaging examinations, but he was
eventually confirmed as primary cardiac lymphoma. This case highlights
that diagnosis for cardiac myxoma should be caution even with sufficient
imaging data.