Right ventricular myxoma: Report of a case

Abstract

We herein report a 36-year-old man who underwent surgical resection for myxoma. Preoperative two-dimensional echocardiography demonstrated a mass in the right ventricle. Intraoperatively, the tumor was found to derive from an anterior papillary muscle of the tricuspid valve. The tumor was successfully excised and the tricuspid valve was repaired with chordoplasty and annuloplasty. A histopathological examination revealed myxoma and a 2-year follow-up has shown no evidence of recurrence or tricuspid valve regurgitation.

Injury to the Tricuspid Valve and Membranous Atrioventricular Septum Caused by Huge Calcified Right Ventricular Myxoma-Report of a Case-

“…[3][4][5] If a RV myxoma arises from the anterior free wall of the RV papillary muscle or the inflow portion of the RV septum, it will result in obstruction of both the RV outlet and inlet. 6 In cases such as the present patient in which the RV myxoma projects from the posterior free wall of the RV, the RV myxoma moves between the right atrium and the RV or obstructs RV inflow.…”

Surgical experience with right ventricular tumors in 17 patients

“…9 The endocardial tumors reported were 40-610 mm in maximum diameter in adults (n = 6; median 80 mm), 10,[3][4][5][6][7][8][9][10][11][12][13][14][15]17,23 with the exception of cases with tumor adherent to the tricuspid valve leafl et (25-30 mm diameter) 16,18 or tumors arising from the papillary muscle of the tricuspid valve without tricuspid valve involvement (12 mm diameter). 8 It is thought that the existence of a tumor of such size in the RV cavity induces dilatation of the cavity and subsequently of the tricuspid annulus suffi cient to cause tricuspid regurgitation. In our series, of the nine patients with endocardial tumors >20 mm diameter who had no preoperative tricuspid regurgitation, three patients required tricuspid repair due to tricuspid regurgitation after tumor resection.…”

“…Concomitant surgery of the tricuspid valve after resection of an RV tumor may include tricuspid annuloplasty by Kay's method, 8 the De Vega method, 9,10,14,16,[21][22][23] the Cosgrove band, 13,18 the Carpentier Edwards ring, 12 chordoplasty, 21 valvuloplasty, 6,21 or tricuspid valve replacement. 19,[24][25][26] Most patients who undergo tricuspid repair have endocardial tumors 8,10,[13][14][15][16][17][18]23 ; few have epicardial tumors.…”

“…19,[24][25][26] Most patients who undergo tricuspid repair have endocardial tumors 8,10,[13][14][15][16][17][18]23 ; few have epicardial tumors. 9 The endocardial tumors reported were 40-610 mm in maximum diameter in adults (n = 6; median 80 mm), 10,[3][4][5][6][7][8][9][10][11][12][13][14][15]17,23 with the exception of cases with tumor adherent to the tricuspid valve leafl et (25-30 mm diameter) 16,18 or tumors arising from the papillary muscle of the tricuspid valve without tricuspid valve involvement (12 mm diameter). 8 It is thought that the existence of a tumor of such size in the RV cavity induces dilatation of the cavity and subsequently of the tricuspid annulus suffi cient to cause tricuspid regurgitation.…”

“…6,7 Such tumors sometimes require tricuspid valve repair. 6,[8][9][10][11][12][13][14][15][16][17][18][19] We retrospectively evaluated the surgical experience with RV tumors, especially those involving tricuspid valve surgery, during the past 18 years in our institution.…”