脂肪含量少且伴有类似囊性肾细胞癌的囊肿样改变的血管平滑肌脂肪瘤：病例报告

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

作者信息

Kobari Yuki, Takagi Toshio, Kondo Tsunenori, Tachibana Hidekazu, Iida Shoichi, Nishina Yu, Omae Kenji, Morita Satoru, Yamamoto Tomoko, Iizuka Junpei, Nagashima Yoji, Tanabe Kazunari

机构信息

Department of Urology, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.

Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan.

出版信息

World J Surg Oncol. 2015 Aug 19;13:251. doi: 10.1186/s12957-015-0677-4.

DOI:10.1186/s12957-015-0677-4

PMID:26282684

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4539965/

Abstract

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.

摘要

血管平滑肌脂肪瘤是一种常见的肾脏良性肿瘤。它通常由脂肪组织构成，因此通过超声、计算机断层扫描和磁共振成像等影像学方法很容易诊断。然而，使用这些影像学方法很难将非典型血管平滑肌脂肪瘤（如乏脂性血管平滑肌脂肪瘤）与恶性肿瘤区分开来。我们报告一例35岁男性患有伴有囊样改变的乏脂性血管平滑肌脂肪瘤的病例。根据术前影像学检查，该血管平滑肌脂肪瘤最初被怀疑为囊性肾细胞癌。左肾中部有一个5厘米的囊性肿瘤，伴有强化的间隔壁和外生性形成。患者接受了部分肾切除术。病理结果显示几乎整个病变均有坏死和血肿，伴有少量脂肪和肌肉组织。最终，诊断为乏脂性血管平滑肌脂肪瘤。