What is the principle of children's tumor classification, and the principle of radiotherapy of children's tumors?

At present, children's malignant tumors have become one of the main causes of children's death. Pediatric malignant tumors are more different from adults. Understanding these characteristics is necessary for diagnosis and treatment.

Classification of pediatric tumors

The purpose of classification is to put similar tumors together, so that their clinical and pathological performance can be studied, and their nature, natural processes and therapeutic effects can be understood. The ideal classification should be classified according to the origin of tissue and the frequency of tumors. In this way, some very similar tumors can be put together to study together. In fact, this classification cannot be done on children with children, and the origin of many tumors can not be clear. There are at least 3 possible basic classification methods:

1. Pathologists believe that the safest method is based on the classification of tissue morphology. However, when tumor cells are not differentiated and cannot be identified, this classification is difficult to implement.

2. Classified according to the source of tumor tissue, but this needs to understand the source of tumor cells. It is difficult when there is doubts about its source.

3. Classified by organs or tissues, but some different types of tumors can originate from the same organ or organization.

At present, children's tumors tend to jointly apply the above three classification methods, that is, according to the original site, tumor cell form and known tissue origin. This category has some repetition because certain tumors can originate from different tissues or organs. However, in children, each organs often have relatively significant fixed connections with tumors, such as kidney maternal cytosoma and kidney, neuroblastoma and sympathetic nerve tissue, liver celloma and liver. Therefore, children's tumor classification methods can be done in practice, and the problems arise are only those tumors that can originate from several different tissues, such as malignant lymphoma, to solve this problem to attribute it together.

Children's malignant tumors can be divided into the following two categories

(1) Embryoic tumor

1. Maternal cytoma

2. Retinal maternal cytoma

3. Nervous maternal cytoma

4. Eliotoma tumor

5. Kidal cell tumor

6. liver cell tumor

7. Horizontal muscle sarcoma

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(2) Tumors containing similar tissue ingredients

1. Star -shaped cell tumor

2. Building membrane cell tumor

3. Shaochrocarbonal gum cell tumor

4. Cerebral membrane tumor

5. Nervous fibroma and neurobetoma

6. Sabisarvana, such as fibrous sarcoma, smooth muscular sarcoma, vascular sarcoma, liposarcoma, osteosarcoma

7. Cancer.

There are some tumors that cannot be included in the above two categories, such as lymphoma, and most of the pediatric tumors are sarcoma. If leukemia and lymphoma, more than 90%of pediatric tumors are derived from interstitial cells. Common epithelial tumors in adults are relatively rare in children.

Radiation treatment principle

The goal of tumor treatment is to cure the local, regional and whole body tumor cells of patients. For most children's malignant tumors, radiation therapy is a very effective treatment method. The main benefit of radiation therapy is that the risk of complications can be included in the scope of treatment, which can include small blood vessels, nerves, connective tissues and organ tissues around the tumor, and can reduce the occurrence of functional damage and disfigurement. However, the use of radiation therapy for children with children (especially children in development) requires comprehensive consideration and weighing the benefits of the disease and the benefits of the disease and the long -term potential adverse reactions of radiation therapy. The best use of radiation therapy, radiation therapy as a separate treatment method or a way in a comprehensive tumor treatment plan. This needs to understand the basic principles of radiation therapy; the characteristics of liquidity in the human body, molecules, cells, tissues, and organs need to be used.

All in all, there are two measures that can improve radiation therapy:

1. Improve the distribution of radiation doses in the body by improving the treatment equipment, that is, improve the therapeutic dose of tumor tissue and reduce the irradiation dose of normal tissue;

2. Use biochemical drugs to improve tumor tissue radiotherapy and reduce the reaction of normal tissue to radiation therapy.

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