Kidney cancer grade 2 is Fuhrman grading, TNM staging is based on tumor size, invasion range, lymph node involvement and metastasis, both of which are important indicators to judge the prognosis of kidney cancer patients. Fuhrman classification is based on the size of cell nuclei and the morphology of nucleoli, and it is divided into grades I, II, III and IV. Grade I: highly differentiated, grade II: highly differentiated, grade III: moderately differentiated, grade IV: poorly differentiated (undifferentiated), the higher the Fuhrman classification is, the worse the prognosis is, that is to say, the higher the probability of recurrence and metastasis, and the higher the degree of danger of the tumor, the quicker the progression of disease. The higher the Fuhrman grade, the worse the prognosis, i.e., the higher the likelihood of recurrence and metastasis, the more aggressive the tumor is, and the faster the disease progresses. TNM stage depends on tumor size, invasion scope, lymph node involvement and metastasis; T: tumor size, including T1 to T4: T1: diameter is generally less than 7 cm, T2: diameter 7-10 cm, T3: diameter can be more than 10 cm, T4 tumor invasion and adrenal gland, peripheral nerve muscle fascia, etc.; N: metastatic development of lymph nodes; M: distant metastasis.1 Stage 1 renal cancer tumor diameter is less than 7 cm, T2: diameter 7-10 cm, T3: diameter greater than 10 cm, T4 tumor invasion, adrenal gland, peripheral nerve muscle fascia, etc.; M: distant metastasis. Stage renal cancer tumor diameter is less than 7cm, the tumor is confined to the kidney.2 stage is greater than 7cm tumor, the tumor is still confined to the kidney, no extra-renal infiltration, no lymph node metastasis.3 stage renal cancer, the tumor invades the renal vein, the vein has a cancerous plug, invades the tissues around the kidneys, and some of the lymph nodes metastasize.4 stage tumors, invades and exceeds perineurial fascia, invades some of the organs around the kidneys, invades the liver, the intestines, the pancreas, the Even distant metastasis of lymph nodes in chest or neck. If you want to clarify the stage of kidney cancer, you need to study in the hospital information to further improve the judgment after examination.