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    <pubDate>Sun, 22 Jun 08 11:22:01 +0800</pubDate>
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      <title><![CDATA[  正常胎儿肾脏的集合系统常有轻度分离，尤其膀胱... ]]></title>
      <description><![CDATA[ &nbsp;&nbsp; 正常胎儿肾脏的集合系统常有轻度分离，尤其膀胱充盈时，分离可达0.6cm。当各种原因引起尿路梗阻时可引起肾盂、肾盏的扩张。可根据膀胱是否充盈判断梗阻位置。双侧肾积水常伴有羊水过少。&nbsp;<br /> &nbsp;&nbsp; 膀胱不充盈时，可见肾脏集合系统无回声暗区增宽。横断面测量肾窦暗区约1～2cm为轻度积水。重度肾积水暗区可达6～7cm，肾实质受压变薄。单侧肾积水时膀胱充盈正常，羊水量正常；双侧肾积水，常伴有羊水过少 ]]></description>
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      <author>ＹＫＥＲＤＥＭＭ</author>
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      <author>珊格格</author>
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