Stomach cancer
Cancer - stomach; Gastric cancer; Gastric carcinoma; Adenocarcinoma of the stomachStomach cancer is cancer that starts in the stomach.
Cancer
Cancer is the uncontrolled growth of abnormal cells in the body. Cancerous cells are also called malignant cells.
Read Article Now Book Mark ArticleCauses
Several types of cancer can occur in the stomach. The most common type is called adenocarcinoma. It starts from one of the cell types found in the lining of the stomach.
Adenocarcinoma is a common cancer of the digestive tract. It is less common in the stomach in the United States, compared to Asia. It is diagnosed much more often in people in eastern Asia, parts of South America, and eastern and central Europe. It occurs most often in men over age 40.
The number of people in the United States who develop this cancer has decreased over the years. Experts think this decrease may be in part because people are eating less salted, cured, and smoked foods.
You are more likely to be diagnosed with gastric cancer if you:
- Have a diet low in fruits and vegetables
- Have a family history of gastric cancer
- Have an infection of the stomach by a bacteria called Helicobacter pylori (
H pylori)
H pylori
Helicobacter pylori (H pylori) is a type of bacteria that infects the stomach. It is very common, affecting about two thirds of the world's populati...
Read Article Now Book Mark Article - Had a polyp (abnormal growth) larger than 2 centimeters in your stomach
- Have inflammation and swelling of the stomach for a long time (chronic atrophic gastritis)
Gastritis
Gastritis occurs when the lining of the stomach becomes inflamed or swollen. Gastritis may last for only a short time (acute gastritis) or it may lin...
Read Article Now Book Mark Article - Have pernicious anemia (low number of red blood cells from intestines not properly absorbing vitamin B12)
Pernicious anemia
Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues. There are man...
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Symptoms
Symptoms of stomach cancer may include any of the following:
- Abdominal fullness or pain, which may occur after a small meal
- Dark stools
- Difficulty swallowing, which becomes worse over time
- Excessive belching
- General decline in health
- Loss of appetite
- Nausea
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Vomiting blood
Vomiting blood
Vomiting blood is regurgitating (throwing up) contents of the stomach that contains blood. Vomited blood may appear bright red, dark red, or look lik...
Read Article Now Book Mark Article - Weakness or fatigue
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Weight loss
Weight loss
Unexplained weight loss is a decrease in body weight, when you did not try to lose the weight on your own. Many people gain and lose weight. Uninten...
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Exams and Tests
Diagnosis is often delayed because symptoms may not occur in the early stages of the disease. And many of the symptoms do not specifically point to the stomach. So, people often self-treat symptoms that gastric cancer has in common with other, less serious, disorders (bloating, gas, heartburn, and fullness).
Tests that can help diagnose gastric cancer include:
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Complete blood count (CBC) to check for anemia.
Complete blood count
A complete blood count (CBC) test measures the following:The number of white blood cells (WBC count)The number of red blood cells (RBC count)The numb...
Read Article Now Book Mark ArticleAnemia.
Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues. Different type...
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Esophagogastroduodenoscopy (EGD) with biopsy to examine the esophagus and the stomach tissue. EGD involves putting a tiny camera down the esophagus (food tube) to look at the inside of the stomach.
Esophagogastroduodenoscopy
Esophagogastroduodenoscopy (EGD) is a test to examine the lining of the esophagus, stomach, and first part of the small intestine (the duodenum)....
Read Article Now Book Mark ArticleBiopsy
A biopsy is the removal of a small piece of tissue for laboratory examination.
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Stool test to check for blood in the stools.
Stool test
The stool guaiac test looks for hidden (occult) blood in a stool sample. It can find blood even if you cannot see it yourself. It is a common type ...
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Treatment
Surgery to remove the stomach (gastrectomy) before the cancer has spread is the standard treatment that can cure adenocarcinoma of the stomach. Radiation therapy and chemotherapy may help. Chemotherapy and radiation therapy after surgery may improve the chance of a cure.
Gastrectomy
Gastrectomy is surgery to remove part or all of the stomach. If only part of the stomach is removed, it is called partial gastrectomyIf the whole sto...
Read Article Now Book Mark ArticleRadiation therapy
Radiation therapy uses high-powered radiation (such as x-rays or gamma rays), particles, or radioactive seeds to kill cancer cells.
Read Article Now Book Mark ArticleChemotherapy
The term chemotherapy is used to describe cancer-killing drugs. Chemotherapy may be used to:Cure the cancerShrink the cancerPrevent the cancer from ...
Read Article Now Book Mark ArticleFor people who cannot have surgery, chemotherapy or radiation may improve symptoms and may prolong survival, but will not cure the cancer. For some people, a surgical bypass procedure may relieve symptoms.
Support Groups
You can ease the stress of illness by joining a cancer support group. Sharing with others who have common experiences and problems can help you not feel alone.
Cancer support group
The following organizations are good resources for information on cancer:American Cancer Society. Support and online communities. www. cancer. org/...
Read Article Now Book Mark ArticleOutlook (Prognosis)
Outlook varies based on how much the cancer has spread by the time of diagnosis. Tumors in the lower stomach are cured more often than those in the higher stomach. The chance of a cure also depends on how far the tumor has invaded the stomach wall and whether lymph nodes are involved.
When the tumor has spread outside the stomach, a cure is less likely. When a cure is not possible, the goal of treatment is to improve symptoms and prolong life.
When to Contact a Medical Professional
Contact your health care provider if symptoms of gastric cancer develop.
Prevention
Screening programs are successful in detecting disease in the early stages in parts of the world where the risk for stomach cancer is much higher than in the United States. The value of screening in the United States and other countries with much lower rates of stomach cancer is not clear.
The following may help reduce your risk for stomach cancer:
- Do not smoke.
- Keep a healthy diet rich in fruits and vegetables.
- Take medicines to treat reflux disease (heartburn), if you have it.
Reflux disease (heartburn)
Gastroesophageal reflux disease (GERD) is a condition in which the stomach contents leak backward from the stomach into the esophagus (food pipe). F...
Read Article Now Book Mark Article - Take antibiotics if you are diagnosed with H pylori infection.
References
Ku GY, Ilson DH. Cancer of the stomach. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6th ed. Philadelphia, PA: Elsevier; 2020:chap 72.
National Cancer Institute website. Gastric cancer treatment (PDQ) - health professional version. www.cancer.gov/types/stomach/hp/stomach-treatment-pdq. Updated January 30, 2023. Accessed March 06, 2023.
Quante M, Bornschein J. Adenocarcinoma of the stomach and other gastric tumors. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 54.
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Digestive system - illustration
The esophagus, stomach, large and small intestine, aided by the liver, gallbladder and pancreas convert the nutritive components of food into energy and break down the non-nutritive components into waste to be excreted.
Digestive system
illustration
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Stomach cancer, X-ray - illustration
An upper GI series in a patient with cancer of the stomach (gastric carcinoma).
Stomach cancer, X-ray
illustration
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Stomach - illustration
The stomach is the portion of the digestive system most responsible for breaking down food. The lower esophageal sphincter at the top of the stomach regulates food passing from the esophagus into the stomach, and prevents the contents of the stomach from reentering the esophagus. The pyloric sphincter at the bottom of the stomach governs the passage of food out of the stomach into the small intestine.
Stomach
illustration
-
Digestive system - illustration
The esophagus, stomach, large and small intestine, aided by the liver, gallbladder and pancreas convert the nutritive components of food into energy and break down the non-nutritive components into waste to be excreted.
Digestive system
illustration
-
Stomach cancer, X-ray - illustration
An upper GI series in a patient with cancer of the stomach (gastric carcinoma).
Stomach cancer, X-ray
illustration
-
Stomach - illustration
The stomach is the portion of the digestive system most responsible for breaking down food. The lower esophageal sphincter at the top of the stomach regulates food passing from the esophagus into the stomach, and prevents the contents of the stomach from reentering the esophagus. The pyloric sphincter at the bottom of the stomach governs the passage of food out of the stomach into the small intestine.
Stomach
illustration
Review Date: 10/16/2022
Reviewed By: Mark Levin, MD, Hematologist and Oncologist, Monsey, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. Editorial update 03/06/2023.