英语语法分析

A large staghorn calculus is seen obstructing the renal peli-calyceal system.

图中可见巨大的鹿角样结石嵌顿于肾盂肾盏系统。

Objective To explore the effective microinjury method for treatment of renal calyceal stones.

目的探讨治疗肾盏结石的有效微创治疗方法。

A single renal artery, single renal vein and mild calyceal dilation were identified in addition to an unexpected finding.

一个单一的肾动脉、肾静脉和轻度肾盏扩张进行鉴定，除了一个意想不到的发现。