“…The symptoms of cardiac lymphangioma appear only when the tumor size becomes large enough. Among the 14 cases, arrhythmia was observed in 4 cases, [7,8,12,19] chest tightness and dyspnea in 4 cases, [14,15,18] chest pain in 2 cases, [17] and heart failure in 1 case [16] ; 2 cases were asymptomatic. [10,13] Results of laboratory examinations are generally normal.…”