Extrarenal Retroperitoneal Angiomyolipoma Masquerading as Retroperitoneal Liposarcoma : A Report of Two Cases

HANDLE Web Site Open Access

Bibliographic Information

Other Title
  • 腎周囲後腹膜脂肪肉腫との鑑別が困難であった腎外性後腹膜血管筋脂肪腫の2例
  • ジンシュウイ アトバラマク シボウ ニクシュ ト ノ カンベツ ガ コンナン デ アッタ ジンガイセイ アトバラマク ケッカンキン シボウ シュ ノ 2レイ

Search this article

Abstract

We report two patients with extrarenal retroperitoneal angiomyolipoma masquerading as perinephric liposarcoma. Patient 1 : A 66-year-old man was diagnosed with a retroperitoneal tumor near the right renal hilum on an abdominal computed tomography (CT) performed before surgery for gastric cancer. A diagnosis of extrarenal retroperitoneal angiomyolipoma was made on the basis of negative uptake of fluorine- 18 2-deoxy-2-fluoro-D-glucose positron emission tomography (18F-FDG PET)/CT. However, because the tumor was found to have gradually enlarged at 18 months afterward, he underwent resection of the extrarenal fat tissue together with the right kidney. Patient 2 : A 56-year-old man underwent abdominal ultrasound during a periodic medical examination, which revealed a right retroperitoneal tumor. Because of the findings in the contrast-enhanced CT and positive uptake of 18F-FDG PET/CT, he underwent resection of the extrarenal fat tissue together with the right kidney. The pathological examination of the two tumors confirmed extrarenal angiomyolipoma. The differential diagnosis of extrarenal retroperitoneal angiomyolipoma from retroperitoneal liposarcoma is difficult even with the use of 18F-FDG PET/CT.

Journal

  • Hinyokika Kiyo

    Hinyokika Kiyo 62 (6), 317-322, 2016-06-30

    泌尿器科紀要刊行会

Keywords

Details 詳細情報について

Report a problem

Back to top