1. Sometimes the patient looks and smells just like a common duct stone but no filling defect or stone is seen in the biliary tree on cholangiogram.
有时，患者症状象总胆管结石，但是胆管造影在胆管分支未见充盈缺损。
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2. The present article by Lee et al1 further supports the idea that an es may be beneficial in certain situations, even with a normal cholangiogram.
由李等人撰写的论文支持这样的观点，即es即便在正常胆管造影患者中在某些情况下也是有益的。
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3. Three previous studies examined the issue of an es with an inconclusive cholangiogram before the present study by Lee et al1 and found mixed results.
在李等人所做的研究之前，旨在评估对不确定的胆管造影结果行es的三个研究发现了混合的结果。
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4. Three previous studies examined the issue of an es with an inconclusive cholangiogram before the present study by Lee et al1 and found mixed results.
