Is puncture particle therapy effective

Malignant tumor is a serious threat to human health. It destroys the structure and function of organ tissue, leads to various complications, and causes organ failure until death when it is widely metastasized. It can be said that the treatment of malignant tumors has been a long-term problem faced by medical scientists. The effective methods of traditional treatment include surgical excision, chemical therapy and external radiation therapy. But the limitations of these treatments are:

1. Surgical resection: Complete resection of the tumor is the most ideal treatment, but if the tumor is not completely or completely resected (infiltration surrounding large vessels and branches or important organs cannot be resected), recurrence will occur. Patients who are older, in poor health and unable to tolerate anesthesia and surgery are also unable to withstand the impact of surgical removal of the tumor.

2. Chemical drug therapy: chemotherapy is a systemic treatment, and often has poor control effect for locally recurrent or incomplete tumor. Moreover, chemotherapy often requires several courses of treatment (weeks to months), and it is difficult to play a role in the treatment of tumors with high malignant degree and fast growth and proliferation.

3. External radiotherapy: External radiotherapy is more effective in local control, but because the radiation does not bend, in order to completely surround the tumor with irregular shape, it needs to cause certain damage to normal tissues and organs. As a result, tumors around structures with low radiation tolerance such as adjacent large blood vessels, spinal cord, urethra and rectum cannot be treated effectively (severe complications can occur with increased radiation exposure). Moreover, most external radiotherapy is similar to chemotherapy, and also requires several cycles to complete, which prolongs the treatment time and may delay the optimal timing of tumor treatment.

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