The type of ascites that occurs in the malignancy is called ‘exudate ascites’. This will have a high proportion of cellular debris, protein and fibrinous exudate. In addition there could be bleeding and speared of the tumour cells into the ascites. Lymphatic blockage and lymph leak can also complicate the picture. As a result of the ascites (which is basically fluid collection inside the abdomen) will get more thick and organised and become more fibrous. A similar example is blood getting clotted if kept outside in a test tube getting clotted. Because of the thickness and increased viscosity the fluid might not drain through a needle.