英语语法分析

The rates of preoperative inexpectant disease finding decreased.

术前未预期疾病发现率有所降低。

Results The rates of biliary duct abnormality, preoperative diagnosis change, preoperative inexpectant disease finding, bile injury and residual stone were 3.5%, 4.4%, 2.4% and 0%, respectively.

结果胆道畸形率3 .5 % ，术前诊断改变率4.4% ，术前未预期疾病发现率2 .4% ，胆道损伤率及残留结石率为零。