肾囊肿是临床常见的良性肿瘤,其发病率随年龄增大而增高。囊肿起源于肾小管,病变起始为肾上皮细胞增殖而形成肾小管壁囊肿扩大或微小突出,其内积聚了肾小球滤过液或上皮分泌液,与肾小管相通。最终囊壁内及其邻近的细胞外基质重组,形成有液体积聚的孤立性囊,此时不再与肾小管相 Renal cysts are common benign tumors and their incidence increases with age. Cysts originate in the tubules, the lesion begins with the proliferation of renal epithelial cells and the formation of renal tubular cyst enlargement or slight prominence, which accumulated glomerular filtration fluid or epithelial secretions, and tubular connectivity. The final cyst wall and its adjacent extracellular matrix reorganization, the formation of liquid accumulation of isolated sac, this time no longer with the tubular phase