[A patient with recurrent sigmoid colon cancer in whom pleural effusion and ascites resolved after FOLFOX 4 therapy].

We performed combination therapy with oxaliplatin/l-LV/5-FU (FOLFOX 4) in a patient with recurrent colorectal cancer (a 58-year-old man) who had pleural effusion and ascites. This resulted in disappearance of the pleural effusion and ascites, as well as negative tumor markers. Surgery was performed for sigmoid colon cancer on September 29, 2004. In February 2006, abdominal swelling was observed, and CEA increased to 15 ng/mL with multiple intraabdominal tumor nodules. The patient was diagnosed as having peritonitis carcinomatosis associated with recurrent sigmoid colon cancer, and was treated with FOLFOX 4. CEA was 134.9 ng/mL before treatment, but became negative after six courses, while his pleural effusion and ascites disappeared after 10 courses of treatment. This treatment also appeared to be useful for recurrent colorectal cancer with peritoneal dissemination.