Giant myxoma causing right ventricular outflow tract obstruction.
ABSTRACT Atrial cardiac myxoma is the most common benign cardiac tumour. Atrial myxoma most commonly arises from the left atrium and, less frequently, from the right atrium or both ventricles. Cardiac myxoma arising from the tricuspid valve is rare. These tumours can present with right heart failure as a result of right ventricular outflow tract obstruction. A high index of suspicion and appropriate investigations are necessary for making the correct diagnosis. Fatal complications such as embolisation and obstruction of the outflow tract and other intracardiac structures make prompt surgical intervention necessary. We report on a patient with a rare type of giant myxoma arising from the tricuspid valve. He underwent successful operation with en-bloc removal of the tumour, while preserving the integrity of the tricuspid valve.
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ABSTRACT: Myxomas arising from the eustachian valve are exceedingly rare. A 72-year-old Jamaican-Chinese woman was evaluated for worsening dyspnea. The 2-dimensional and real time 3-dimensional transesophageal echocardiogram showed a 75 mm length × 44 mm width, multilobulated, mobile mass arising from the eustachian valve occupying the entire right atrial and right ventricular cavities extending into the coronary sinus, right ventricular outflow tract, and proximal inferior vena cava. The patient underwent successful resection of the mass and replacement of the tricuspid valve. Histopathologic examination confirmed the diagnosis of atrial myxoma. This is the largest myxoma found on a Eustachian valve.The American journal of case reports. 01/2012; 13:29-32.