Early symptoms of gastric ulcer-type gastric cancer

The early symptoms of gastric ulcer-type gastric cancer are not typical, and mainly include: 1. Abdominal pain: often表现为持续性的上腹部疼痛，疼痛可能加剧于餐后，且可能放射至背部。 (This part seems to be in Chinese still, let me translate it): Abdominal pain: often表现为persistent upper abdominal pain, which may worsen after meals and may radiate to the back. 2. Nausea and vomiting: due to gastrointestinal dysfunction caused by the tumor, patients may experience symptoms of nausea and vomiting. 3. Weight loss: patients may experience significant weight loss due to factors such as loss of appetite and indigestion. 4. Heartburn: a burning sensation may occur in the stomach, and this sensation may not improve明显after taking related medications. 5. Black stool: bleeding caused by stomach cancer may lead to the passage of tarry black stools. These symptoms may appear alone or in combination, and once they occur, it is recommended to seek medical attention promptly for detailed examination and treatment.