Oh Karen Y, Holznagel David Edward, Ameli Jonathan R, Sohaey Roya
Department of Radiology, Oregon Health & Science University, Portland, OR 97239, USA.
Ultrasound Q. 2010 Dec;26(4):233-40. doi: 10.1097/RUQ.0b013e3181f573fd.
Fetal kidneys are evaluated on routine obstetric ultrasounds; therefore, fetal renal developmental anomalies are frequently encountered with prenatal screening. Absence of the fetal kidney from its expected location generates a differential diagnosis that originates from the knowledge of the developmental origins of the kidneys. Many of the renal developmental anomalies demonstrate overlapping features in both symptoms and imaging appearance. We illustrate the pertinent findings of selected fetal renal anomalies in the setting of a unilateral empty renal fossa and suggest an algorithm for differentiating between the diagnoses. Discussed anomalies include horseshoe kidney, pelvic kidney, crossed fused renal ectopia, and renal agenesis.
胎儿肾脏在常规产科超声检查中会被评估；因此，胎儿肾脏发育异常在产前筛查中经常遇到。胎儿肾脏在预期位置缺失会产生鉴别诊断，这源于对肾脏发育起源的了解。许多肾脏发育异常在症状和影像学表现上都有重叠特征。我们阐述了单侧肾窝空虚情况下选定胎儿肾脏异常的相关发现，并提出了一种用于鉴别诊断的算法。讨论的异常包括马蹄肾、盆腔肾、交叉融合性肾异位和肾缺如。
