Ascites
It is the condition in which fluid fills the abdomen. Cancer can result in ascites. According to medical professionals, ascites is the last stage of malignancy. When the cancer begins to grow, it begins to produce holes and wounds in the peritoneum, the lining of the abdomen. The peritoneal invasion of malignancies results in fluid leakage into the abdominal cavity. This is coupled with the abnormal functioning of the lymphatic system, which drains fluids that escape. The lymph nodes become obstructed due to the invasion of cancer cells. Therefore, ascites is caused by fluid loss and an inability to discharge it. Ascites in the context of malignancy is more accurately termed malignant ascites.
Compressing the liver is another way in which malignancy can cause fluid loss. Under pressure, the liver causes the vessels to compress, releasing fluid from the vessels into the surrounding cavity.