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.