Hepatolithiasis and narrow at which several types?

Right now hepatolithiasis and narrow the type commonly used methods are two kinds : one is the Japanese type, Another is TSUNODA type. (1) Type of Japan : 1985 Japan hepatolithiasis and narrow proposed new sub-type method. At the point where the stones into intrahepatic type (type I), intrahepatic duct stones; Intrahepatic appearance (IE) that that is, both the liver and bile duct stones. By stones around at the different liver, are further divided into the left - (L), right - (R) and the right-left (LR-). According to the degree of bile duct stenosis were S0 (no stenosis), S1 (mild stenosis), S2 (stenosis). According to the Ministry of peripheral parts of sub-narrow, central stenosis, liver canal stenosis, liver and bile duct stenosis mains narrow. According to the degree of bile duct expansion into D0 (without expansion), D1 (mild expansion), D2 (severe expansion). According to the Ministry of peripheral parts of sub-expansion, the central Ministry of expansion, expansion of the liver and bile duct expansion. (2) TSUNODA type : TSUNODA by stones and other sites exist, biliary dilatation of the bile duct stenosis and the availability of typing. Type I : intrahepatic no significant expansion, a small stone and biliary sludge. Type II : the general expansion of intrahepatic bile duct, it is usually the distal common bile duct stricture. Type I and type II intrahepatic stones from extrahepatic factors, it said secondary hepatolithiasis. Type III : the side of intrahepatic bile duct with single or multiple cystic local expansion, accompanied with the left or right hepatic duct stricture. Type IV : the same type III, but the lesions in the bilateral lobe. Type III-IV liver caused by the stones, they are called primary hepatolithiasis. Biliary duct stenosis refers to diameter, under the limitations of a small state, mild and severe stenosis of the boundaries of 2 mm. If accompanied by dilatation of the bile duct and between them, the Ministry of luminal diameter stenosis Although bile duct diameter than normal, said such a relatively narrow stricture. Intrahepatic mild or severe expansion of the boundaries of lumen diameter of more than 10 mm.