It is reported that a patient with malignant lymphoma was infected with COVID-19 virus, and the malignant tumor in his body did not receive any chemotherapy, radiotherapy and drug treatment. After a lapse of four months, most of the tumor cells with black plaques under CT contrast actually disappeared, which is what we call self-healing without medicine.

Everyone was stunned by COVID-19's miraculous operation. They were discussing why COVID-19 could repel malignant tumor, whether it was a replicable operation and whether it could be used as a treatment for malignant tumor.

In fact, the author of this paper gives two reasonable conjectures. He said that there may be two mechanisms of action, one is to stimulate specific immunity, and the other is to stimulate widespread immunity.

In fact, malignant tumor cells are what we call cancer cells, transformed from normal cells. Under the action of physical and chemical carcinogens, normal cells in the body are transformed into cancer cells through gene mutation, which is a mutant normal cell, not from the outside. This mutant cell can not only proliferate indefinitely, but also transform other normal cells into the same mutant cells, and can also be transferred to other parts of the body for diffusion.

The immune system in our body is like a camera in the street, which carefully examines the characteristics of each cell all the time. Once cancer cells are found, they will be removed immediately. But everyone's immune system is different, and cancer cells are also good at camouflage. Just like a kind person, after experiencing some stimulation, his heart becomes extremely dark, but the surface is still like a person. In this case, the immune system can't distinguish, and will treat these mutant cells that have changed in his heart as normal cells. A mutant cell will corrode other normal cells and spread to other parts of the body bit by bit to absorb nutrients. After a certain accumulation, these cancer cells will be completely out of control.

COVID-19 is a real virus. After the virus invades the human body, the immune system will be activated, glow with great vitality and start working immediately to destroy all tumor cells and other viruses. This may be induced specific immunity or universal immunity.

This report really aroused the hope of patients with malignant tumors. What patients are most concerned about is whether they can actively infect COVID-19 to drive away the malignant tumor in the body. However, many scientists believe that this kind of thing is purely coincidental. Whether it can be copied or not needs further study.

After all, scientific research is rigorous and standardized. Only through a series of repeatable and reproducible experimental studies can we find out the correct principle and develop effective drugs. Only one or two cases can't explain anything, so it's very certain until there are further research results.