Fat-poor angiomyolipoma with cyst-like changes mimicking a cystic renal cell carcinoma: a case report

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• 作者：Yuki Kobari ; Toshio Takagi ; Tsunenori Kondo…
• 关键词：Fat ; poor angiomyolipoma ; Cystic renal cell carcinoma ; Renal biopsy
• 刊名：World Journal of Surgical Oncology
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：13
• 期：1
• 全文大小：2,953 KB
• 刊物主题：Surgical Oncology;
• 出版者：BioMed Central
• ISSN：1477-7819

文摘

Angiomyolipoma is a common benign renal tumor. It is typically composed of adipose tissue and hence is easily diagnosed by using imaging methods such as ultrasonography, computed tomography, and magnetic resonance imaging. However, it is difficult to differentiate an atypical angiomyolipoma such as a fat-poor angiomyolipoma from a malignant tumor by using these imaging methods. We report a case of a fat-poor angiomyolipoma with cyst-like changes in a 35-year-old man. The angiomyolipoma was initially suspected to be a cystic renal cell carcinoma according to preoperative imaging studies. A 5-cm cystic tumor with an enhanced septal wall and exophytic formation was present in the middle section of the left kidney. The patient underwent partial nephrectomy. Pathological findings showed necrosis and hematoma in almost the entire lesion, with a small amount of adipose and muscle tissue. Finally, a fat-poor angiomyolipoma was diagnosed.