Pronounced "a sy tees", ascites is a fluid that has accumulated in the abdomen. Normally, there is fluid produced inside the abdominal cavity, which is part of a circulation and lubrication system in the body. Several gallons a day are produded and absorbed each day. Cancer cells produce even more and interfere with absorption of this fluid. Therefore, the abdomen (belly) grows and a person starts looking like they are pregnant. Other reasons for ascites are liver, heart and kidney diseases that are not cancerous.