| 신세포암으로 오인된 상피모양 신혈관근지방종 |
| 하유신, 이준하, 이광배, 최항원, 조대행, 이충범 |
| 가톨릭대학교 의과대학 비뇨기과학교실 |
| Epithelioid Angiomyolipoma of the Kidney Misdiagnosed as a Renal Cell Carcinoma |
| U-Syn Ha , Jun Ha Lee , Kwang Bae Lee , Hang Won Choi , Dae Haeng Cho , Choong Bum Lee |
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Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea |
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Published online: December 30, 2006. |
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| ABSTRACT |
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Epithelioid angiomyolipoma is a recently recognized variant of angiomyolipoma, which is characterized by the presence of polygonal cells with densely eosinophilic cytoplasm and varying degrees of nuclear atypia. We report a case of renal epithelioid angiomyolipoma misdiagnosed as a renal cell carcinoma that occurred in a 46-year-old woman. Pathologically, the tumor was composed of diffuse sheets of epithelioid cells, which had pleomorphic and hyperchromatic nuclei with densely eosinophilic cytoplasm and were positive in HMB-45 and smooth muscle actin. There was no expression of cytokeratin, epithelial membrane antigen, vimentin, myoglobin, S-100 protein, estrogen receptor and progesterone receptor. After radical nephrectomy, the patient showed no evidence of recurrence or metastasis until now. (Korean J Uro-Oncol 2006;4:91-94) |
| Key Words:
Epithelioid cell; Angiomyolipoma; Kidney |
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