Science and Education Publishing American Journal of Medical Case Reports 2374-216X 3 9 2015 08 20 Two Sub-obstructive Left Atrium Myxomasinduce Cardiac Failure after Breast Cancer Treatment 288 290 EN Nicolas LEDUC Vincent MOLINIE Vincent VINH-HUNG Radiation Oncology, University Hospital of Martinique, France AJMCR2015397 10.12691/ajmcr-3-9-7 2015 08 02 2015 08 14 2015 08 20 Atrial myxoma is a rare condition. Cardiac failure after left breast cancer treatment is not usually attributed to such pathology. We describe the case of a 69 year-old female who presented two sub-obstructive left atrium myxomas one year after the end of left breast cancer treatment. Acute cardiac failure, without history of prior cardiovascular disease, could have resolved from the combination of various factors involving myxomas and complications of radiotherapy and chemotherapy. The absence of atrial images on the computerised tomography and ultrasonography performed before cancer treatment question the accuracy of diagnosis imaging as well as the actual rate of growth of cardiac myxoma.