What is Stomach Cancer? Stomach cancer, or gastric cancer, is a form of cancer that starts in the stomach's inner lining. The stomach, a muscular organ situated in the upper abdomen, is essential for digestion. Stomach cancer can develop in different parts of the stomach and can spread to other organs if left untreated. It is a serious condition that often progresses slowly over many years, making early detection difficult but crucial for successful treatment. There are several types of stomach cancer, with the most common being adenocarcinoma, which starts in the cells of the stomach lining. Other less common types include gastrointestinal stromal tumors (GIST), lymphoma, and neuroendocrine tumors. Symptoms of Stomach Cancer The symptoms of stomach cancer often appear in the later stages, which makes early detection challenging. Some of the common symptoms include: 1.Persistent Indigestion: This includes frequent heartburn or acid reflux that doesn't go away even with over-the...