MANISH SHAH, MD: Depending on how extensive the tumor is within the stomach and also where it is within the stomach, we would choose either for a total gastrectomy, if the tumor was involved throughout the stomach, or a subtotal gastrectomy if only part of the stomach was involved.
ANNOUNCER: Regional lymph nodes are also removed and tested.
MANISH SHAH, MD: There are six chains of lymph nodes on the inside curve of the stomach or on the outside curve of the stomach. And removing all those lymph nodes is important to accurately stage the tumor, meaning accurately determine how advanced the tumor is.
JOHN MACDONALD, MD: If there's no cancer in the lymph nodes, those patients don't need any further treatment, and they have a high probability of being cured, maybe 80 to 90 percent.
ANNOUNCER: Gastric cancer can be cured if detected early. But few patients experience symptoms in early stages and most aren't diagnosed until the cancer has advanced.
DAVID ILSON, MD: Because we do not have effective screening and because gastric cancer is rare, most patients present with symptomatic disease and with more advanced cancer. So stage III, stage IV disease is much more common.
ANNOUNCER: If the tumor has spread outside of the stomach to the lymph nodes, it is considered stage III cancer. It is treated with surgery, followed by radiation and chemotherapy.