The danger of these tumors lies in the rapid spread of them without the patient’s notice, which leads to the destruction of organs and the occurrence of general failure in the body and then death. Also, due to the property of spreading and penetrating the organs, the malignant tumor extends into the organs, so that it is difficult to remove it completely.

The form of danger varies according to the affected organ, such as stomach explosion in the case of stomach cancer or liver failure in the case of liver cancer.