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Stomach cancer is common throughout the world and affects all races, it is more common in men than in women, and has its peak between 40 and 60 years old. Stomach cancer mortality is higher in Japan and Chile, presumably because of the different diets in those countries where they are less dependent on red meat.

In the last 25 years the incidence of gastric cancer in the western world has decreased by 50% and the resulting mortality rate is less than one third of what was oncebe, but in less developed countries it is still one of the leading causes of death, probably because diagnoses in these countries through the period of the disease (usually by a barium meal) the stomach is in a very advanced stage.

TYPES of gastric cancer

There are different types of gastric cancer, some of which are very rare. The most common types of stomach cancer start in the glandular cells of the gastric mucosa) (adenocarcinomas, this is where stomach acid and digestive disordersEnzymes are made, and where most stomach cancer to start. If the gastric cancer will be further advanced, it can spread through the bloodstream and travel of organs like the liver, lungs and bones. Gastric cancer that start in the lymphatic tissue (lymphoma), in which the stomach muscles (sarcoma) or in the tissues that support the organs of the digestive system) are (gastrointestinal stromal tumors less frequently and are treated in different ways.

Signs and symptoms
Early indicationsStomach cancer are chronic dyspepsia and epigastric discomfort, in the later stages of weight loss, anorexia, a feeling of fullness after eating, anemia and fatigue. Blood in the stool can also be present and if the cancer is in the cardia (above occur) vomiting.

CAUSATION
The exact cause of stomach cancer is not known that the presence of the Helicopter pylori bacterium seems to be an important factor. Predisposing factors include environmental factors such as smoking andhigh alcohol consumption. Because gastric cancer is more common in people with families and people with blood type A are also involved genetic factors. Dietary factors, including the methods of food preservation such as pickling, smoking or salting also have an influence on the incidence of gastric cancer.

DIAGNOSIS
Stomach cancer is through an examination that may include upper gastrointestinal (GI diagnosed) series, endoscopy or gastroscopy where a thin, flexibleTube is passed down the throat so the doctor in the stomach, esophagus and the upper part of the bowel Barium meals and Barium swallows to be seen. Because stomach cancer can spread to the liver, pancreas and other organs near the stomach as well as the lung, the doctor may order a CT scan, a PET scan, endoscopic ultrasound or other tests to check these areas.

Stomach cancer can spread (metastasize) to the esophagus or small intestine, and may by enlargementStomach wall to nearby lymph nodes and organs. Metastasis occurs in 80-90% of patients with gastric cancer, with a five-year survival rate of 75% in the early stages of diagnosed and diagnosed less than 30% of respondents in the late stages.

TREATMENT
Although gastric cancer is treated with surgery, radiotherapy or chemotherapy, surgery in many cases is the treatment of choice. Even in patients whose disease is not considered surgically curable, resection offers a palliativeEffect and improves the potential benefits of chemotherapy.

The nature and extent of the cancer determines what kind of surgery is best suited. Common surgical procedures include partial or complete removal of the stomach.
Antiemetics can control nausea, which increases as the cancer advances. In the more advanced stages may be needed sedatives and tranquilizers to control anxiety. Drugs are often necessary to separate and control unremitting pain.
In some cases ofadvanced gastric cancer, a laser beam is directed through an endoscope can vaporize most of the tumor and relieve obstruction without an operation.

PROGNOSIS
Stomach cancer is curable if detected early, but most people do not want medical help until the disease is quite advanced, possibly because symptoms occur late and are often vague and nonspecific. Eating fresh fruits and vegetables that contain antioxidant vitamins (eg A and C) appears to lower the risk of stomachCancer. The rate of gastric cancer among smokers is approximately double the cessation of smoking is essential.

In the United States and most of the Western world, is the 5-year survival rate between 5-15%. In Japan, where gastric cancer is often diagnosed early, the 5-year survival rate is around 50%. Five-year survival for advanced gastric cancer range from approximately 20% for regional disease to almost zero for those with distant metastases.

Treatment of metastaticStomach cancer can relieve symptoms and prolong survival, at times, but long remissions are not common. The survival of inoperable stomach cancer is usually only a few months if not treated. With chemotherapy the average survival time is approximately 12 months. If cancer is found before it has spread, the relative five-year survival rate above 61%.

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