腎細胞癌の根治的腎摘除術11年後に指摘された転移性右室内腫瘍

Metastatic Right Ventricular Tumor Eleven-year after Nephrectomy for Renal Cell Carcinoma

転移性心臓腫瘍は心臓腫瘍の大半を占めており，原発性心臓腫瘍の20～40倍の頻度とされる1）．腎細胞癌の心臓転移は進行期まで臨床症状を呈さないことが多く2），遠隔期に転移性心臓腫瘍に対して腫瘍切除を行った症例の報告は世界的にも少ない3）．

Metastatic heart tumors make up the majority of heart tumors and are 20 to 40 times more frequent than primary heart tumors. Cardiac metastasis of renal cell carcinoma is often asymptomatic until advanced stage, and there are few reports of surgical tumor resection for metastatic heart tumors at very late term. We experienced a case of metastatic right ventricular tumor eleven-year after nephrectomy for renal cell carcinoma. Tumor resection was performed under cardiopulmonary bypass and cardiac arrest, but the tumor on the free wall of the right ventricle trabeculae could not be completely resected. After surgery, the patient underwent chemotherapy for residual tumor, which is growing.