腎細胞癌右房内腫瘍血栓に対する内視鏡的観察後の摘除の1例

ENDOSCOPIC OBSERVATION OF THE RIGHT ATRIAL TUMOR THROMBUS OF RENAL CELL CARCINOMA

　72歳，男性．右房内腫瘍血栓を伴う右腎細胞癌に対し，手術時，内視鏡による右房内腫瘍血栓の観察を試みた．われわれの方法による心臓内視鏡検査は，心拍動下に血流を障害することなく腫瘍血栓を観察することができ，その形態によって，人工心肺使用の有無の最終的選択に有効な手段であると考えられた．

A case of renal cell carcinoma with tumor thrombus extending into the inferior vena cava and the rightatrium in a 72-year-old man is reported. Endoscopical observation of the right atrial tumor thrombus wasmade using a cystoscope to know whether or not the surface of the thrombus was smooth, the thrombus wascovered with fresh clots and the tricuspid valve was obstructed. Then right radical nephrectomy and removalof the tumor thrombus were performed without using cardiopulmonary bypass.