[Usefulness of cholesterol solvents administered percutaneously in the non-surgical treatment of biliary lithiasis].

We present the current state of the art in the use of Methyl tertbutyl ether (MTBE) in dissolution of gallbladder cholesterol stones, as well as the use of another solvents in case of common bile duct stones. MTBE is useful, with few collateral effects and is safe but must be used cautiously by skilled and experimented personal; the cost of equipment is high; MTBE could not be used in common bile duct stones, monoctanoic acid is used instead but it needs continuous vigilance while infused. We do not recommend the use of others substances.