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Background  The possible benefits of the surgical resection of multiple metastases in rare sites from colorectal cancer (CRC) are still unclear. Therefore, more cases are needed to investigate the surgical outcomes of these diseases. A very rare case in which the simultaneous resection of both the metachronous retroperitoneal lymph node and pancreatic metastases from rectal cancer was successfully performed is reported.    Case presentation  A 68-year-old man had undergone low anterior resection for rectal cancer. Eight months later, computed tomography showed an enlarged lymph node located below the aortic bifurcation and a pancreatic head tumor. Positron emission tomography showed increased focal uptake in these two lesions. With a diagnosis of retroperitoneal lymph node metastasis from rectal cancer and primary pancreatic cancer or pancreatic metastasis from rectal cancer, resection of the enlarged retroperitoneal lymph node and pancreaticoduodenectomy were performed. The pathological examination showed that both resected lesions were metastases from the primary rectal cancer. After the metastasectomy, the patient was given systemic chemotherapy, which was discontinued due to an adverse event. He was then followed up routinely without any medication. Sixty-nine months after the metastasectomy, he is alive without any indication of recurrence.    Conclusions  Thus, even with metastases from CRC located in rare sites, an acceptable outcome can be expected following curative surgical resection in carefully selected patients. Whenever possible, an aggressive surgical approach should be included in the multimodality treatment of metastatic CRC.

surgical case reports

Long-term survival with surgery for metachronous retroperitoneal lymph node and pancreatic metastases after curative resection of rectal cancer: a case report