Fig 2 A: No abnormality was found in transthoracic echocardiography and PET-CT(B ) after the operation in the heart(Tricuspid valve forming ring,arrows). C:  There was no abnormality in cardiac color Doppler ultrasonography after one operation month. D: Pathological section showed metastatic squamous cell carcinoma of lymph nodes and saw tumor thrombus (E ). F:  Echocardiography revealed that a mass was attached to the tricuspid valve after four heart surgery months.