Surgical management of biatrial myxoma: case report

Heart tumours account for approximately 0.2 % of all tumours: of these, approximately 75 % of all primary heart tumours are benign and 50 % of them are myxomas. Further, myxomas make up 0.0017 % of the general population of patients with cardiovascular disease. Biatrial myxomas, i.e. tumours in both the left and right atria, can be in the form of a ‘butterfly’ or a ‘dumbbell’, and account for < 1 % of all cardiac myxomas. Here we describe the successful surgical management of a rare case of a large biatrial myxoma and concomitant atrioventricular valve insufficiency. Briefly, 2D transthoracic echocardiography findings included an end-diastolic volume of 90 ml, an end-systolic volume of 40 ml and a left ventricular ejection fraction of 55 % (according to Simpson). The fibrous ring of the mitral valve measured 36 mm with a regurgitation degree of 2 while the fibrous ring of the tricuspid valve was 42 mm in size and the regurgitation grade was 3. Lesion size in the cavity of the left and right atrium were 73 × 38 mm and 80 × 42 mm, respectively. These neoplasia were surgically removed under peripheral cardiopulmonary bypass, hypothermia and cold cardioplegia (Custodiol). The myxomas were accessed through the right atrium, according to Giradon and were resected without defragmentation. Next, mitral valve plasty using a soft support ring and annuloplasty of the tricuspid valve were performed according to de Vega. The duration of artificial circulation was 150 minutes and that of myocardial ischaemia was 100 minutes. The patient was extubated 11 hours after surgery, spent 22 hours in the intensive care unit and was discharged on the 14th day after surgery. Surgical resection of biatrial myxomas before the development of serious irreversible or life-threatening complications can provide rapid symptomatic relief in congestive heart failure.Received 30 May 2021. Revised 22 August 2021. Accepted 23 August 2021.Funding: The study did not have sponsorship.Conflict of interest: Authors declare no conflict of interest.Contribution of the authors Literature review: T.A. Simonyan Drafting the article: T.A. Simonyan, I.M. Tsiskaridze Critical revision of the article: T.A. Simonyan, I.Yu. Farulova, E.A. Babajanyan Surgical treatment: I.I. Scopin, I.M. Tsiskaridze Final approval of the version to be published: T.A. Simonyan, I.I. Scopin, I.M. Tsiskaridze, I.Yu. Farulova, E.A. Babajanyan