肾血管平滑肌脂肪瘤 (AML)是肾脏最常见的良性肿瘤 ,因少有症状 ,过去临床认为少见。随着影像学设备的发展 ,因其瘤组织中的脂肪成分在 CT上有特征性表现 ,肾脏 CT扫描时偶然检出的病例不断增多 ,已有不少文献对局限于肾实质的 AML 进行了报道 ,对于突破肾实质进入肾周的巨大AM Renal angiomyolipoma (AML) is the most common benign neoplasm in the kidney. Because of its few symptoms, it was considered clinically rare in the past. With the development of imaging equipment, because of the characteristic features of the fat composition in the tumor tissue on CT, the accidental detection of the kidney during the CT scan has been increasing, and many literatures have been conducted on the AML confined to the renal parenchyma. Reported that the giant AM that breaks the renal parenchyma into the kidney weeks