I have been advised that I need a partial gastrectomy. Does anyone have any idea what this involves?

Partial Gastrectomy. Gastrectomy is the surgical removal of part or all of the stomach. In a partial gastrectomy only part of the stomach is removed . If the whole stomach is removed, it is called total gastrectomy. Gastrectomies are usually done to treat tumors (benign or cancerous), chronic ulcers, uncontrollable bleeding, etc.