In the 2004 edition of the WHO histologic staging of renal tumors, renal tumors are classified as renal cell tumours, metanephric tumours, nephroblastic tumours, mesenchymal tumours The tumors include mesenchymal and epithelial tumours, mixed mesenchymal and epithelial tumours, neuroendocrine tumours, haematopoietic and lymphoid tumours, germ cell tumours. Among them, renal cell tumors include 10 types of malignant renal cell carcinomas: clear cell renal cell carcinoma These include clear cell renal cell carcinoma, multiocular clear cell renal cell carcinoma, papillary renal cell carcinoma, chromophobe renal cell carcinoma, and Bellini’s collecting duct carcinoma. carcinoma of the collecting ducts of Bellini, renal medullary carcinoma, Xp11.2 traslocation /TFE3 gene fusion carcinoma, carcinoma associated with neuroblastoma, mucinous tubular and spindle cell carcinoma, and unclassified renal cell carcinoma. renal cell carcinoma (unclassified) and two benign adenomas: papillary adenoma and oncocytoma. Posterior renal tumors are divided into 3 types: metanephric adenoma, metanephric adenofibroma, and metanephric stromal tumour. Nephroblastoma is divided into three types: nephrogenic rests, nephroblastoma, and cystic partially differentiated nephroblastoma. Mesenchymal tumors are classified into clear cell sarcoma, rhabdoid tumou, congenital mesoblastic nephroma, and ossifying renal tumour of infants, which mainly occur in children. tumour of infants), and smooth muscle sarcoma (leiomyosarcoma), angiosarcoma (angiosarcoma), rhabdomyosarcoma (rhabdomyosarcoma), malignant fibrous histocytoma (malignant histocytoma), and perivascular cell tumour (haemangiosarcoma), which mainly occur in adults. haemangiopericytoma, osteosarcoma, angiomyolipoma, epithelioid angiomyolipoma, leiomyoma, hemangioma (haemangioma), lymphangioma, juxtaglomennular cell tumour, renomedullary interstitial cell tumour, schwannoma, and Isolated fibrous tumour (solitary fibrous tumour) 15 species. Mixed mesenchymal and epithelial tumors are divided into three types: cystic nephroma, mixed epithelial and stromal tumour, and synovial sarcoma. Neuroendocrine tumors are classified as carcinoid, neuroendocrine carcinoma, primitive neuroectodermal tumour, neuroblastoma, and phaeochromocytoma. There are five types of phaeochromocytoma. Hematopoietic and lymphatic tumors are divided into three types: lymphoma, leukaemia, and plasmacytoma. Germ cell tumors were divided into 2 types of teratoma and choriocarcinoma. I collected 2000 cases of renal tumors (individual cases had two types of tumors, which were categorized as the more malignant one in the statistics), which were: 1419 cases of clear cell renal cell carcinoma, 53 cases of multifocal clear cell renal cell carcinoma, 112 cases of papillary renal cell carcinoma, 81 cases of suspicious cell renal cell carcinoma, 1 case of collecting duct carcinoma, 7 cases of Xp11.2 translocation/TFE3 gene fusion-related renal cell carcinoma, and 5 cases of mucinous tubular and spindle cell carcinoma, 69 cases of unclassified renal cell carcinoma, 1 case of papillary adenoma, 23 cases of pheochromocytoma, 2 cases of posterior renal adenoma, 1 case of renal primary remnant, 2 cases of nephroblastoma, 1 case of partially cystic differentiated nephroblastoma, 1 case of congenital mesangial cell nephroma, 1 case of smooth muscle sarcoma, 1 case of angiosarcoma, 3 cases of malignant fibrous histiocytoma, vascular smooth muscle lipoma 166 cases, 17 cases of epithelioid vascular smooth muscle lipoma, 5 cases of smooth muscle tumor, 4 cases of hemangioma, 1 case of paraglobular cell tumor, 3 cases of cystic nephroma, 6 cases of mixed epithelial and mesenchymal tumors, 1 case of carcinoid tumor, 1 case of primitive neuroectodermal tumor, 9 cases of lymphoma and 4 cases of metastatic tumor. According to the above data, there are 8 common and more common tumors in adults. Five of the malignant tumors were renal cell carcinomas: clear cell renal cell carcinoma, papillary renal cell carcinoma, suspicious renal cell carcinoma, unclassified renal cell carcinoma, and multifocal clear cell renal cell carcinoma; and three benign tumors: vascular smooth muscle lipoma, eosinophilic cell tumor, and epithelioid vascular smooth muscle lipoma (with malignant potential).