Amodio John B, Shapiro Ellen, Pinkney Lynne, Rivera Rafael, Strubel Naomi, Douglas Diah, Fefferman Nancy
Department of Radiology, New York University Medical Center, New York, NY 10016, USA.
J Pediatr Surg. 2005 May;40(5):e25-8. doi: 10.1016/j.jpedsurg.2005.02.019.
Metanephric adenoma (MA) is a renal tumor that is rarely found in children. We present a case of MA that was incidentally discovered in an 8-year-old child on computed tomography. We also review the literature regarding this lesion in the pediatric population. There are certain imaging features of MA that may suggest the diagnosis preoperatively. Metanephric adenoma is often hyperechoic on sonography, hyperdense on noncontrast computed tomography scans, and of low signal intensity on T1- and T2-weighted magnetic resonance images. Nephron sparring surgery has been performed in several cases. However, the distinction of MA from other metanephric lesions as well as from Wilms' tumor and papillary renal cell carcinoma may not be readily apparent at the time of surgery.
后肾腺瘤（MA）是一种罕见于儿童的肾脏肿瘤。我们报告一例在一名8岁儿童的计算机断层扫描中偶然发现的后肾腺瘤病例。我们还回顾了有关儿科人群中这种病变的文献。后肾腺瘤有某些影像学特征，可能在术前提示诊断。后肾腺瘤在超声检查中通常为高回声，在非增强计算机断层扫描上为高密度，在T1加权和T2加权磁共振图像上为低信号强度。在一些病例中已进行了保留肾单位手术。然而，在手术时，后肾腺瘤与其他后肾病变以及与肾母细胞瘤和乳头状肾细胞癌的区分可能并不容易。
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