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A Case of Renal Angiomyolipoma with Minimal Fat Mimicking Renal Cell Carcinoma A Case of Renal Angiomyolipoma with Minimal Fat Mimicking Renal Cell Carcinoma Masuda, Akinori Kamai, Takao Yoshitatsu, Fukabori Honda, Mikihiko Yamanishi, Tomonori Yoshida, Ken-ichiro Renal angimyolipoma Renal cell carcinoma We present a case of renal angiomyolipoma (AML) with minimal fat mimicking renal cell carcinoma(RCC). AML is composed of variable amount of fat, smooth muscle and abnormal blood vessels. In general,AML can be differentiated from RCC with great accuracy using modern radiological techniques due to thefat component of the renal mass. In the present case, the renal tumor did not demonstrate intratumoral faton radiological studies. Surgery was performed and the renal tumor was removed. Histologically, the renaltumor showed abundant muscle that occupied almost the entire lesion, which demonstrated HMB-45 antigen.The tumor was diagnosed as renal AML. Case Report 2011-03-25 eng journal article https://dmu.repo.nii.ac.jp/records/931 AA00629581 03855023 Dokkyo journal of medical sciences 38 1 115 118 https://dmu.repo.nii.ac.jp/record/931/files/KJ00007070999.pdf application/pdf 218.8 kB 2017-05-24