腎細胞癌の転移性右房腫瘍の1例

Metastatic Right Atrial Tumor of Renal Cell Carcinoma：Report of a Case

はじめに　転移性心臓腫瘍は原発性心臓腫瘍よりはるかに多く，全腫瘍患者の約10％が心臓転移を引き起こすと報告されている1）．心臓転移を伴う腎細胞癌では，外科的切除が可能な場合には予後改善が期待できる2）．われわれは，人工心肺使用，心停止下に切除しえた腎細胞癌の転移性右房腫瘍の1例を経験したので報告する．

Metastatic cardiac tumors are known to be more common than primary cardiac tumors, and most patients are asymptomatic. In patients with renal cell carcinoma （RCC） with cardiac metastases, total tumor resection is known to improve the prognosis. We report a case of a successfully resected RCC with right atrial metastasis under cardiopulmonary bypass. A 71-year-old female with abdominal distention was diagnosed with right RCC and extension to the right atrium. After neoadjuvant chemotherapy, she underwent right nephrectomy and neiection of intraocular tumor extention with partial right atrium under cardiopulmonary bypass, because the tumor tightly adhered to the right atrium. She had a good postoperative course and was discharged home on the 22nd postoperative day. Nine months after surgery, she shows no sign of recurrence.