Turk Kardiyol Dern Ars. 2009; 37(7): 479-482

Asymptomatic right atrial myxoma originating from the inferior vena cava and right atrium junction in a patient with breast ductal adenocarcinoma

Necla Ozer¹, Onur Sinan Deveci¹, Sercan Okutucu¹, Metin Demircin^2
1Departments of Cardiology and Cardiovascular Surgery, Medicine Faculty of Hacettepe University, Ankara
²Hacettepe University Faculty Of Medicine, Department Of Cardiovascular Surgery, Ankara

We present asymptomatic right atrial myxoma in a patient with breast ductal adenocarcinoma. A 58-year-old female was referred to our clinic for the evaluation of the potential cardiotoxic side effects of anthracycline-based chemotherapy. She had a 10-month history of modified radical mastectomy for ductal adenocarcinoma of the breast, followed by adjuvant chemotherapy. To evaluate potential side effects of anthracycline-based regimen, transthoracic echocardiography was performed, which showed a highly mobile, cystic, and heterogenous mass, 20x25 mm in size, located in the right atrium. Transesophageal echocardiography confirmed the highly mobile mass originating from the inferior vena cava and extending to the right atrium. Surgery was planned. Upon exposure, the tumor had a broad base, with attachment to the lower dorsal free wall, interatrial septum of the right atrial cavity, and upper border of the inferior vena cava. The tumor was completely excised and histopathologic diagnosis was myxoma. Localization of right atrial myxoma at the junction of the inferior vena cava and right atrium is a rare condition, and its coexistence with breast carcinoma has only been reported once.

Keywords: Carcinoma, ductal, breast, heart atria; heart neoplasms/diagnosis; myxoma/diagnosis/surgery; tomography, X-ray computed; vena cava, inferior.

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