A cardiac angiosarcoma was resected and successfully managed by replacement of the right atrium and bileaflet reconstruction of the tricuspid valve by conserving non-involved valvular tissue. Competency of the new valve was confirmed intraoperatively by transesophageal echocardiography and reconfirmed at discharge. Evaluation 3 months postoperatively revealed no evidence of valvular insufficiency or right heart failure. In selected patients, resection of extensive primary cardiac neoplasms may be possible without necessitating prosthetic valve replacement.