Early symptoms of gastric cancer

Written by Wang Hui Jie
Gastroenterology
Updated on May 05, 2025
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The early symptoms of gastric cancer are not specific or characteristic in clinical presentations, and there are no specific signs either. It can also be said that there are no symptoms or signs at all. Some patients may be diagnosed with gastric cancer after presenting with symptoms of bleeding, such as vomiting blood, blood in stool, or black stools. Therefore, it is recommended for individuals over 40 years old to consider undergoing gastroscopy, especially if they experience discomfort or pain in the upper abdomen, weight loss, or have a history of poor gastric mucosa conditions seen in previous gastroscopies, including atrophy, intestinal metaplasia, or ulcers, as well as a history of testing positive for Helicobacter pylori. Regular follow-up gastroscopies are advised under these circumstances.

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Symptoms of gastric cancer

Symptoms of gastric cancer include nausea, vomiting, acid reflux, pain in the upper abdomen, and a sense of fullness and discomfort, especially after eating, which are some of the early symptoms. As the tumor progresses, symptoms can worsen, including pain, vomiting of blood, and black stools indicating upper gastrointestinal bleeding. If the tumor is near the pylorus, it can cause pyloric obstruction, which manifests as acid reflux followed by vomiting of undigested food from the previous night. In the late stages of gastric cancer, patients may experience fatigue, weight loss, severe cachexia, and anemia. These are symptoms of advanced gastric cancer.

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How is stomach cancer treated?

The treatment for gastric cancer now includes surgery, radiotherapy, chemotherapy, targeted therapy, and immunotherapy, among others. The specific treatment plan is formulated based on various factors such as the staging of the cancer, the patient's overall condition, and the presence of any underlying diseases, which are all taken into consideration before deciding on a treatment plan. For patients in the early stages who are generally in good condition, surgical resection can be evaluated and is primarily curative. Post-operative treatment decisions, such as whether to pursue adjuvant radiotherapy or chemotherapy, depend on the pathology results and the presence of high-risk factors for recurrence. For patients in advanced stages who are found to have distant metastases upon diagnosis, treatment is primarily chemotherapy. Additionally, there are broad-spectrum targeted therapies against angiogenesis, such as apatinib, which are suitable for patients with advanced gastric cancer or those who do not respond well to chemotherapy, serving as a secondary or tertiary line of treatment. These are some of the treatment methods for gastric cancer. It is crucial that the use of any medication is conducted under the guidance of a doctor.

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Can stomach cancer be cured? Can stomach cancer be cured?

Early-stage gastric cancer patients can undergo curative surgery, and then decide whether postoperative adjuvant radiochemotherapy is needed based on the specific pathological type and the presence of high-risk recurrence factors. Through these treatments, a cure can be achieved. Generally, if there is no recurrence or metastasis within five years, it is considered cured. For example, patients in stage IA, even without adjuvant chemotherapy, have a relatively high five-year survival rate, generally above 90% after curative surgery. However, if it is found to be advanced-stage, such as initial detection showing distant metastases to the liver, lungs, etc., these patients are primarily treated with systemic chemotherapy or symptomatic palliative care. In such cases, a cure is not achievable. Therefore, whether a cure is possible depends on the stage of gastric cancer and factors such as the patient's basic physical condition.

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Mid-stage symptoms of gastric cancer

Symptoms of mid-stage gastric cancer can include nausea, vomiting, poor appetite, decreased food intake, and upper abdominal pain, as well as symptoms related to the digestive tract. Some patients may also experience black stool or even vomiting blood, which are symptoms of upper gastrointestinal bleeding. Additionally, there can be bloating and abdominal pain. If the tumor is located near the pylorus and causes pyloric obstruction, clinical symptoms will include vomiting, vomiting of overnight food, and resulting in gastric retention. This can lead to significant symptoms such as abdominal pain, bloating, acid reflux, and nausea.

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What can someone with stomach cancer eat?

For the diet of stomach cancer patients, they should focus on eating easily digestible foods and maintain a balanced diet with frequent small meals. They can eat meat, eggs, vegetables, and fruits. However, they should avoid cancer-causing foods such as pickled products and barbecued foods, as well as overly greasy or hard-to-digest foods. There are no specific dietary prohibitions. As long as the patient has a good appetite and can tolerate food, they can eat many types of food.