Grading and staging of tumor

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Tumor grade (grading) and stage (staging) are generally used for malignant tumors. Malignant tumor is based on the degree of differentiation

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Tumor grade (grading) and stage (staging) are generally used for malignant tumors. Malignant tumor is based on the degree of differentiation, the size of the size and the number of mitotic images to determine the degree of malignancy. The three level classification method in recent years, more people tend to use simple, easy to master, the grade one was well differentiated, low-grade malignancy; the second is the differentiation medium, moderate to low grade malignancy; differentiation, is highly malignant. Although this classification has its advantages, it also has some significance for clinical treatment and prognosis. But the lack of quantitative standards, can not rule out the impact of subjective factors. Therefore, it is necessary to further study how to establish the accurate classification standard.

There are different tumor staging scheme, its main principle is based on the size of primary tumor, infiltration depth, scope and involvement of adjacent organs, there is no local and distant lymph node metastasis, no blood or other distant metastases to determine tumor development period or sooner or later.

Grading and staging of the tumor on the treatment and prognosis of clinical reference value, especially the tumor staging is more important, but must be combined with a variety of biological characteristics of malignant tumor and the patient's general condition into consideration.

(data from network)

 

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