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1、 医学英语阅读：胃癌gastric cancer alternative names cancer - stomach; stomach cancer; gastric carcinoma definition gastric cancers are malignancies of the stomach. causes, incidence, and risk factors several different types of cancer can occur in the stomach. the most common type is called adenocarcinoma, wh
2、ich refers to the way the cancer looks under the microscope. there are several types of adenocarcinoma. because other types of gastric cancer occur much less frequently, this article focuses on adenocarcinoma. adenocarcinoma of the stomach is a common cancer of the digestive tract worldwide, althoug
3、h it is relatively uncommon in the us. it occurs most frequently in men over 40 years old. the incidence of this form of gastric cancer is extremely high in japan, chile, and iceland. the incidence of most types of gastric adenocarcinoma in the us has declined over the years. experts think the decre
4、ase may be related to reduced intake of salted, cured, and smoked foods, and increased vitamin c consumption. however, the incidence of adenocarcinoma in the high part of the stomach where it connects with the esophagus has increased markedly, along with an increase in cancers of the lower esophagus
5、. the reason for this increase is unknown.diagnosis is often delayed by the absence of symptoms in early disease or by self-treatment of symptoms that may be common to other, less serious gastrointestinal disorders (bloating, gas, and a sense of fullness). risk factors for gastric cancer are a famil
6、y history of gastric cancer, helicobacter pylori infection, blood type a, a history of pernicious anemia, a history of chronic atrophic gastritis, a condition of decreased gastric acid, and a prior history of adenomatous gastric polyp. symptoms * loss of appetite * difficulty swallowing, particularl
7、y difficulty that increases over time * vague abdominal fullness * nausea and vomiting * vomiting blood * abdominal pain * excessive belching * breath odor * excessive gas (flatus) * unintentional weight loss * a general decline in health * premature abdominal fullness after meals signs and tests *
8、an upper gi series showing gastric cancer * an egd (esophagogastroduodenoscopy) and biopsy showing gastric cancer * a cbc showing anemia (although there are many other reasons for anemia) * a stool test that is positive for blood treatment surgical removal of the stomach (gastrectomy) is the only cu
9、rative treatment. radiation therapy and chemotherapy may be beneficial. a recent study showed that for many patients, chemotherapy and radiation therapy given after surgery improve the chance of a cure.Gastric cancer 0 for patients in whom surgery is not an option, chemotherapy or radiation can impr
10、ove symptoms. for some patients, a surgical bypass procedure may provide relief of symptoms. support groups the stress of illness may often be eased by joining a support group with members who share common experiences and problems. see cancer - support group and gastrointestinal disorders - support
11、group. expectations (prognosis) there is a wide variation in prognosis of gastric tumors. tumors in the lower stomach are more often cured than those in the higher area gastric cardia or gastroesophageal junction. the depth to which the tumor invades the stomach wall and whether lymph nodes are invo
12、lved influence the chances of cure. in circumstances in which the tumor has spread outside of the stomach, cure is not possible and treatment is directed toward improvement of symptoms. complications * cancer spreading (metastasizing) to other organs or tissues * weight loss * fluid accumulation in
13、the belly (ascites) calling your health care provider call your health care provider if symptoms of gastric cancer develop. prevention in japan, where the risk of gastric cancer is very high, mass screening programs have been successful in detecting disease in the early stages. the value of screening in the us and other countries with lower rates of gastric cancer is not clear. avoiding smoking may reduce risk.
