Strong echoes in the dilated cystic ducts with shadows in posterior were the direct sign of the cystic duct lithes, but the sensitivity was very low.
扩张的胆囊管内出现强回声团，后方伴声影，是胆囊管结石直接征象，但其超声检查的敏感性不高；
2
The light degree dilation of intrahepatic bile duct were found in whose clinical symptom and sign were not clear and obvious.
无明显临床症状和体征者肝内胆管为轻微或轻度扩张。
3
Purpurse: To study the CT sign and clinic characteristic symptom of calculus of intrahepatic duct combined with hepatic abscess and analyze the causal relation of hepatolith and hepatic abscess.