A Case of Synchronous Ureteral Metastasis of Sigmoid Colon Cancer

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  • S状結腸癌同時性尿管転移の1例

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<p>A 70-year-old man was admitted to another hospital for left hydronephrosis, but his back pain worsened and he was referred to our hospital. As a result of further examination, a diagnosis of sigmoid colon cancer, metastatic liver tumor (lateral segment) and primary left ureteral tumor was made. Since stenosis of sigmoid colon cancer was imminent, hepatectomy was scheduled in the second phase. First, retroperitoneal left nephrectomy and laparoscopic high anterior resection (D3) were performed. The postoperative course was uneventful and he was discharged on the 13th postoperative day. The postoperative pathology revealed that the ureteral cancer was not a primary tumor but a metastatic tumor from colon cancer. Postoperative CT examination showed an enlarged lymph node near the resected left kidney, and metastasis or residual tumor could not be ruled out. Therefore, PET-CT was performed, and showed sacral bone metastasis at the S4-5 level. Since metastatic ureteral tumors have a poor prognosis with a high rate of distant metastasis, he was introduced to our Cancer Treatment Center for the purpose of multidisciplinary treatment and is currently being treated.</p>

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