Abstract
A 62-year-old man was seen at the medical center because of epigasric disfassion. An abdominal ultra-sonography showed multiple cystic lesions in the spleen and hypoechoic mass including small cystic lesions in the pancreas tail. After surgery, cystic lesions in the spleen were diagnosed as metastatic tumors from the pancreas cancer. Metastasis to the spleen from a pancreas cancer is very rare, and only four cases including this case have been reported in Japan. The spleen is a central immune system and it is hard for cancer cells to implant to the spleen. A route of metastasis of the cancer cells to the spleen is unclear, but in the present case cancer cells in the pancreas went to the spleen via the splenic artery.
