英语语法分析

Purpose:To investigate the treatment of pyonephrosis.

目的：探讨脓肾的保肾治疗。

Objective: To investigate the safety and efficacy of surgical endoscopic techniques in treating calculous pyonephrosis.

目的：探讨运用腔内泌尿外科技术治疗结石性脓肾的安全性和有效性。

Conclusions the key to the treatment of pyonephrosis by kidney-sparing surgery is early diagnosis, timely drainage and relief of obstruction.

结论早期诊断，及时引流，解除梗阻是脓肾保肾治疗的关键。