How is gastric cancer examined?

Symptoms of early gastric cancer include dull pain in the upper abdomen, bloating, loss of appetite, nausea and vomiting. These symptoms are not specific to early gastric cancer, so they are easily ignored as common stomach problems, which is one of the reasons why patients seek medical treatment too late. Therefore, it should be emphasized that men over 40 years old (the age limit for smokers and alcoholics should be relaxed to 35 years old) who have a slight upper abdominal discomfort should be screened to achieve the purpose of early detection and early diagnosis.

How to detect gastric cancer in the early stage:

Fiber gastroscopy is of great significance in the diagnosis of gastric cancer. It can detect early gastric cancer, differentiate benign from malignant ulcers, determine the type of gastric cancer and the range of lesion infiltration, and conduct follow-up examinations of precancerous lesions. Regular follow-up examinations and monitoring of patients with precancerous lesions by gastroscopy are of certain significance.

2. X-ray diagnosis:

(1) X-ray diagnosis of early gastric cancer: Early gastric cancer refers to tumors confined to the mucosa or submucosal layer, regardless of their size or the presence or absence of lymph node metastasis. Gastric hypotony double contrast radiography combined with fiber gastroscopy is of great value in detecting early gastric cancer.

(2) X-ray diagnosis of advanced gastric cancer: The radiographic manifestations of advanced gastric cancer are closely related to the gross pathological classification. Special X-ray manifestations of gastric cancer and gastric ulcer in different parts of the body.

3. CT examination:

CT examination can show the extent of gastric cancer's growth into and out of the stomach cavity, the nearby anatomical relationship, and possible metastasis. The metastasis of gastric cancer through the blood can be clearly shown on CT.

4. Endoscopic Ultrasound:

Endoscopic ultrasound is a relatively new technology that allows the examiner to directly see the layers of the stomach wall and understand the overall picture of the tumor, which is helpful for the diagnosis and TNM staging of gastric cancer. Endoscopic ultrasound is widely used in many centers in the United States. It is now possible to insert an ultrasound probe through the ordinary endoscopic biopsy channel for clinical examination.

According to the survey results of various parts of my country, the detection rate of gastric cancer in the survey is about 0.037-0.6%. Among the detected gastric cancers, early gastric cancer accounts for 15-25%, which greatly improves the detection rate of gastric cancer in asymptomatic patients. According to statistics, about half of the asymptomatic gastric cancer patients are confirmed to have early gastric cancer by surgical pathology, and most of them have no lymph node metastasis; while 57% of symptomatic gastric cancer have already had lymph node metastasis. Therefore, the survey of the natural population is an arduous and important task. The survey of the natural population has data showing that large-scale screening with an interval of 1.5-2 years can help detect early gastric cancer. For example, the Japanese medical community uses the radiological imaging gas-barium double contrast method for the survey, and then performs gastroscopy on suspicious cases. As a result, the early surgery rate of gastric cancer has reached more than 50%, and the 5-year survival rate has reached more than 90%. At present, my country mainly conducts selective local surveys in areas with a high incidence of gastric cancer, such as those over 35 years old, those with unhealthy eating habits such as high-salt and moldy food, and those with a family history of cancer. High-risk individuals are then screened out through comprehensive analysis and then undergo endoscopic and X-ray examinations.

The above is an introduction to "How to check for gastric cancer?" People who are related to the pathogenic factors of gastric cancer are advised to take preventive measures against gastric cancer. If you have other questions about gastric cancer, please consult our experts online or call for consultation.

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