Why does gastrointestinal bleeding occur in the late stages of cancer?
Disease description:
Currently in the late stage of cancer, but gastrointestinal bleeding has been detected, so I'm a bit worried. Why does gastrointestinal bleeding occur in advanced cancer?
Doctor's answer (1)
Dr. Qi Zhirong
Gastrointestinal bleeding in advanced cancer is usually caused by tumor invasion or compression of blood vessels in the stomach. Specific causes that may lead to gastric bleeding include:
1. Tumor invasion of blood vessels: Cancer cells can directly erode blood vessels within the stomach wall, causing vessel rupture and subsequent bleeding.
2. Ulcer formation: Inflammatory reactions caused by cancer may lead to ulcer development on the gastric mucosa, which can then bleed.
3. Varices: Advanced liver cancer may be accompanied by portal hypertension, obstructing blood return and causing dilation of gastric fundal veins, which are prone to rupture and bleeding.
4. Tumor obstruction: Tumor growth may block the gastric passage, leading to accumulation of food and blood, thereby increasing the risk of bleeding. Symptoms of gastrointestinal bleeding include black, tarry stools, vomiting blood, anemia, weakness, and fainting.
If any of these symptoms occur, immediate medical attention should be sought.
