Ben-Mordechay Daniel, Ben-Shlush Aviva, Raviv-Zilka Lisa, Jacobson Jeffrey M, Soudack Michalle
Department of Pediatric Imaging, Chaim Sheba Medical Center, Ramat-Gan, Israel.
Department of Pediatric Imaging, Chaim Sheba Medical Center, Ramat-Gan, IsraelSackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
J Ultrasound Med. 2016 May;35(5):959-63. doi: 10.7863/ultra.15.05048. Epub 2016 Apr 12.
The purpose of this study was to describe the incidence and appearance of accessory adrenal tissue in neonates, as diagnosed by high-resolution sonography, and increase the awareness of this entity.
We examined the adrenal glands in 153 neonates referred for renal and urinary tract sonography at our institution between January 2014 and January 2015. All kidneys and adrenal glands, except for ectopic kidneys, were scanned with the neonate prone and a linear array transducer with frequency of 11 or 14 MHz.
In 9 neonates (5.9%), sonography showed a round, well-defined structure adjacent to the adrenal gland with a hyperechoic center and hypoechoic periphery, similar to the echogenicity of the normal adrenal medulla and cortex, respectively. The largest diameter of the structure measured 2.9 to 4.5 mm. On follow-up studies, which were available for 7 neonates, the structure was not evident, and the suprarenal area was normal.
Accessory adrenal tissue can be identified in the suprarenal area in neonates with high-resolution sonography. Radiologists and sonographers caring for neonates should be aware of this finding and not confuse it with disease.
本研究旨在描述通过高分辨率超声诊断的新生儿副肾上腺组织的发生率及表现，以提高对该实体的认识。
我们对2014年1月至2015年1月期间在我院因肾脏和尿路超声检查而转诊的153例新生儿的肾上腺进行了检查。除异位肾外，所有肾脏和肾上腺均在新生儿俯卧位时使用频率为11或14MHz的线性阵列换能器进行扫描。
在9例新生儿（5.9%）中，超声显示肾上腺旁有一个圆形、边界清晰的结构，中心为高回声，周边为低回声，分别类似于正常肾上腺髓质和皮质的回声。该结构的最大直径为2.9至4.5mm。在7例新生儿的随访研究中，该结构不明显，肾上腺区域正常。
通过高分辨率超声可在新生儿肾上腺区域识别出副肾上腺组织。照顾新生儿的放射科医生和超声检查人员应了解这一发现，且不要将其与疾病混淆。
