Subaşı Özkan, Aziret Mehmet, Karaman Kerem, Ercan Metin
Sakarya University Education and Research Hospital, Department of General Surgery, Sakarya, Turkey.
Sakarya University Education and Research Hospital, Department of General Surgery, Sakarya, Turkey.
Int J Surg Case Rep. 2019;65:152-155. doi: 10.1016/j.ijscr.2019.10.035. Epub 2019 Oct 23.
Renal cell carcinoma (RCC) is a rare tumor that comprises only 3% of adult cancers, while renal parenchymal tumors constitute 85% of all RCC cases. RCC frequently metastasizes to the lungs, bones, brain or liver; however, the gastrointestinal tract, particularly the colon, is an unusual location for metastasis.
A 63-year-old male patient was admitted complaining of hematochezia. The patient had undergone left-side nephrectomy for RCC, 5 years previously. Computed tomography and colonoscopy detected a splenic flexure tumor and after left hemicolectomy and splenectomy, histopathological examination revealed a colonic metastasis of the renal cell carcinoma.
Cases of colonic metastasis following resection of a RCC are uncommon in the literature and their location can be very varied, but include the sigmoid colon, splenic flexure, transvers colon and hepatic flexure. Recurrence of RCC is frequently seen during the first three postoperative years, and surgical resection is suggested for solitary non-metastatic tumor.
RCC rarely metastases to the colon but may occur years after curative resection. Therefore, RCC patients should be closely followed for the long term. In case of isolated metastasis, long-term survival can be achieved with R0 resection.
肾细胞癌（RCC）是一种罕见肿瘤，仅占成人癌症的3%，而肾实质肿瘤占所有肾细胞癌病例的85%。肾细胞癌常转移至肺、骨、脑或肝；然而，胃肠道，尤其是结肠，是不常见的转移部位。
一名63岁男性患者因便血入院。该患者5年前因肾细胞癌接受了左侧肾切除术。计算机断层扫描和结肠镜检查发现脾曲肿瘤，左半结肠切除术和脾切除术后，组织病理学检查显示为肾细胞癌的结肠转移。
肾细胞癌切除术后发生结肠转移的病例在文献中并不常见，其位置变化很大，但包括乙状结肠、脾曲、横结肠和肝曲。肾细胞癌复发常见于术后头三年，对于孤立性非转移性肿瘤建议手术切除。
肾细胞癌很少转移至结肠，但可能在根治性切除术后数年发生。因此，肾细胞癌患者应长期密切随访。如果是孤立性转移，R0切除可实现长期生存。
