根据声像图表现分为两型：肾盂肾盏扩张型（15例）与肾盏扩张型（12例）。

The sonogram features were divided into two types:pelvicaliceal dilation type(15 cases)and calicectasis type(12 cases).

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图示：肾盂积水(由长期尿路阻塞引起)致肾盂肾盏明显扩张。

The renal pelvis and calyces show marked dilation, consistent with hydronephrosis, the result of chronic urinary tract obstruction.

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而若为肾内肾盂，肾盏扩张和肾实质损害均严重。

In the intrarenal pelvis, caliceal dilatation and renal parenchymal damage are maximal.

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