结论取石前胆汁色泽如呈米汤样改变或有絮状物，则必有结石残留。

Conclusion There must be residual stones while the bile is like rice-water or floccule before stones taken out.

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海绿石的富集区与氧化环境，粗粒沉积和残留沉积区相一致。

We found that concentration areas of. Glauconites are identical with the oxidizing environment, coarse-sediment areas and relict sediments.

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术中12例经镜检及取石明确诊断，且防止了术后残留结石。

Of them, intraoperative diagnosis was made certain and stones were extracted in 12 eases, thus postoperative remnant stones could be avoided.

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