Which cancer indications cause ascities? which to not?

Typically: Ovarian cancer can cause ascites. But any cancer when it reaches the stage where the peritoneum, or the lining of the abdominal cavity, becomes involved, can cause ascites.

Also liver blockage: In addition to cancer involvement in the belly or peritoneum, when cancer affects the flow of blood through the liver there can be a backup of fluid that basically overflows into the abdominal cavity and results ascites. These cancerous tumors can be of any origin once they spread to areas causing such congestion or irritation.