[A Case of Long-Term Survival of Resected Pancreatic Metastasis from Colon Cancer].

Pancreatic metastasis of colorectal cancer is uncommon and is often identified in later stages of cancer, thereby making resection more uncommon. We report a case oflong -term survival after resection of metachronous metastasis to the pancreas from primary sigmoid colon cancer. A 50-year-old female patient underwent a sigmoid colon resection and bilateral salpingo-oophorectomy for sigmoid colon cancer and metastatic ovarian cancer in 2007. She underwent partial lung resection for metastatic lung cancer twice. Four years and 11 months after the first operation, an isolated mass was identified in the pancreatic tail, and a distal pancreatectomy, splenectomy, left adrenal gland removal, and regional lymph node dissection were performed. The tumor stained negatively for cytokeratin 7 and positively for cytokeratin 20, resulting in a diagnosis of pancreatic metastatic cancer from sigmoid colon cancer. The patient is alive 3 years and 4 months after distal pancreatectomy. This suggests that curative resection is effective for metastasis of colorectal cancer to the pancreas, similarly to metastases to the liver and lung.