My sister, age 48, also has stage IV stomach cancer. She was diagnosed in April, 2007. She has been having fluid buildup for about the last three months. She gets real uncomfortable with the fluid and it seems that food does not want to stay down when her stomach fills up. She goes in about once a month for a paracentesis which drains the fluid. She then feels better and is able to eat and keep food down. However, I too wonder that this fluid build up cannot be a good sign. My sister is quite thin, and when she is full of fluid she looks like she is pregnant. My sister has had nine chemos and is scheduled for her tenth. The doctors say they will keep going with chemo as long as she tolerates it. On her last cat scan, it did show some slight shrinkage. I guess all we can do is hope and pray.