Ascites is the abnormal buildup of excess fluid in the abdominal (peritoneal) cavity. Almost 80% of all ascites cases are considered to be caused by cirrhosis of the liver and at least 10% of cases are counted for advanced cancer disease. Ascites caused by cancer is called malignant ascites. It has a high incidence in patients of advanced ovarian, endometrial (the lining of the womb), breast, stomach, colon, lymphoma and pancreatic cancers. We'll focus this article on malignant ascites in advanced gastric cancer or swollen stomach cancer.