The incidence rate varies from country to country and region to region 2. 10.Multiple foci are common in hereditary renal cancer and papillary renal cancer 11.There are often pseudo-envelope and surrounding renal tissues, so partial nephrectomy can be performed 12.Histology is divided into clear cell carcinoma, papillary adenocarcinoma, suspicious cell carcinoma, unclassified renal cell carcinoma, collecting duct carcinoma, medullary carcinoma, multifocal cystic renal cell carcinoma, Xp11 translocation renal cancer, neuroblastoma with 13.Histological grading includes highly differentiated, moderately differentiated and poorly differentiated 14.If hematuria, abdominal pain or abdominal masses appear, they are generally in advanced stage 15.Early stage renal cancer often has no obvious symptoms 16.Pay attention to the appearance of paraneoplastic syndrome 17.Common metastatic parts are lung, bone, liver, adrenal gland, skin and brain tissue 18.Diagnosis mainly relies on imaging examination 19.Radical surgery is preferred for limited kidney cancer 20.Conventional lymph node dissection is not needed for limited kidney cancer 21.Postoperative adjuvant therapy may not necessarily reduce the recurrence and metastasis rates 22.Local progressive kidney cancer and metastatic kidney cancer are not very satisfactory 23.Cytokines, molecular targeting, chemotherapy and radiotherapy can be considered for metastatic kidney cancer 24.Surgical complications include bleeding, infection, peripheral organ damage, pleural The main factors affecting the prognosis of kidney cancer are pathological stage and histological grading 26. hereditary kidney cancer includes VHL syndrome, hereditary papillary adenocarcinoma of the kidney, hereditary smooth muscle disease kidney cancer, BHD syndrome 27. hereditary kidney cancer is common in middle-aged and young people, often bilateral and multiple 28. renal function and recovery and surgical complications, every 3-6 months