Stomach cancer typically starts in the stomach lining and grows slowly over several years without causing noticeable symptoms.
Stomach cancer can be difficult to diagnose in the early stages, since if symptoms do appear, they are often mistaken for symptoms of other gastrointestinal problems. As a result, stomach cancer can go undiagnosed for years before the symptoms grow serious enough to call for testing.
What is stomach cancer?
Stomach occurs when an abnormal mass of cells develops in the stomach.
Most stomach cancer cases in the United States occur at the junction of your stomach and esophagus (gastroesophageal junction). In other countries where gastric cancer is more common, the cancer starts in the central portion of the stomach.
There are several types of stomach cancer. The most common type is adenocarcinoma, which accounts for 90%-95% of cases. Other types include neuroendocrine (carcinoid) tumors in the stomach, primary gastric lymphoma, and gastrointestinal stromal tumors.
What are the signs and symptoms of stomach cancer?
Early symptoms of stomach cancer may include:
- Mild nausea
- Loss of appetite
- Constant stomach pain or indigestion
- Bloating, especially after eating
Symptoms of stomach cancer that can intensify as the disease progresses may include:
- Trouble swallowing
- Belching (burping)
- Ascites (fluid buildup around the stomach)
- Unexplained or unintentional weight loss
- Vomiting after meals
- Stomach pain, especially after meals
- Jaundice (the development of a yellow tint to the skin or the whites of the eyes)
- Blood tests that show anemia
- Persistent stomach ulcer
What are the stages of stomach cancer?
Cancer staging helps your doctor determine the best course of treatment based on the size and extent of the tumor. There are five stages of stomach cancer:
- Stage 0 (high grade dysplasia): Abnormal cells in the inner lining of the stomach are detected. Surgery may involve partially or completely removing the stomach, along with any adjacent lymph nodes.
- Stage I: Disease has not progressed past the thick muscle of the stomach wall. As with stage 0, surgery will probably be necessary to remove all or part of your stomach and any adjacent lymph nodes. You may undergo chemoradiation or chemotherapy, which can be used both before surgery to reduce the tumor and after surgery to eradicate any remaining cancer. Chemoradiation is the combination of chemotherapy and high-energy radiation therapy, which kills cancer cells.
- Stage II: The inner, supporting, or muscle layer of the stomach may have been affected by the cancer. Additionally, the cancer may have invaded neighboring lymph nodes.
- Stage III: Cancer may have spread to every layer of the stomach and nearby organs such as the colon or spleen. It may be smaller but reach deep into your lymph nodes.
- Stage IV: Cancer has spread to distant organs such as the liver, lungs, or brain. The cancer is much harder to cure at this stage.
What are the survival rates for stomach cancer?
Depending on the stage of stomach cancer, prognosis varies. People with stomach cancer who are diagnosed early typically have a considerably better prognosis than those who are diagnosed later. The 5-year survival rate may be as high as 70% (for early stage stomach cancer) or as low as 6% (for advanced stage stomach cancer).
For a more precise evaluation of your prognosis, talk to your doctor. Your prognosis is affected by factors such as the type of cancer you have, how far it has spread, your health, and how the cancer reacts to treatment.
Top How Long Does Stomach Cancer Take to Develop Related Articles
CancerCancer is a disease caused by an abnormal growth of cells, also called malignancy. It is a group of 100 different diseases, and is not contagious. Cancer can be treated through chemotherapy, a treatment of drugs that destroy cancer cells.
Visual Guide to Stomach UlcersLearn about the causes and symptoms of stomach ulcers, and find out which kinds of treatment can help.
Does Stomach Cancer Pain Come and Go?Stomach cancer, also known as gastric cancer, develops in the lining of the stomach. Stomach cancer tends to develop slowly over many years.
Does Stress Cause Stomach Cancer?Although stress does not directly cause stomach cancer, chronic stress may increase cancer risk or make cancer spread faster.
Gastric Cancer QuizWhat are the main risk factors for gastric cancer? Where does gastric cancer occur? Take this quiz to learn about this different type of cancer.
How to Get Rid of Nausea and VomitingWhat is nausea? Do you want to know how to get rid of nausea and how to stop vomiting? Learn home remedies for nausea, anti-nausea medication, what causes nausea, and other info crucial to nausea relief. Understand why we vomit, how vomiting can be treated or prevented, and more.
What Is Gastric (Stomach) Cancer? Signs, Symptoms, CausesWhat are the common signs and symptoms of stomach cancer? Learn about gastric cancer diagnosis, treatment, and their risks, how Heliobacter pylori affects the stomach, what the risk factors are, and how clinical trials have helped determine cancer risks. Guard your gastrointestinal health with reliable medical information.
Tummy Trouble QuizTummy Troubles? Get a better idea of what's causing the nausea, vomiting, bloating, gas, constipation, diarrhea, pain, and other gastrointestinal discomforts and problems. Take the Tummy Troubles Quiz!
What Are the Early Warning Signs of Stomach Cancer?Stomach cancer, in its early stages, rarely shows any warning signs or symptoms. Due to its gradual and seemingly silent progress, stomach cancer is usually hard to detect in its early stages. Signs and symptoms include loss of appetite, weight loss, belly pain and others.
What Are the Symptoms of Stomach Cancer in a Woman?Stomach cancer, also known as gastric cancer, is a cancer that develops from the lining of the stomach. Stomach cancer tends to develop slowly over many years. Early stages rarely cause symptoms, so they are often undetected. Symptoms of stomach cancer in women are the same as those in men.
What Is the Main Cause of Stomach Cancer?Factors that cause stomach cancer are unknown. It is known that stomach cancer is a result of changes (mutations) in the deoxyribonucleic acid (DNA) of the stomach cells. These mutations cause the cells to undergo uncontrolled division and result in the formation of abnormal cells.