Highlights a rare presentation of malignant phyllodes tumor of the breast metastasizing to the left atrium and causing arrhythmia.
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May prompt cardiac evaluation for arrhythmia in malignant phyllodes tumor; hypothesis-generating for rare metastatic routes and needs prospective validation.
Metastatic tumors to the heart usually involve right sided chambers. We report a rare case of malignant phyllodes tumor of breast with metastatic involvement of left atrium occurring through direct invasion from mediastinal micro-metastasis and presenting as a left atrial mass causing arrhythmia.
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Bhambhani et al. (2014) studied this question.
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