What is gallstones without obstruction?

Stones: No one knows for sure why patients develop gallstones(concretions formed within the gallbladder), although some are the result of metabolic , hematologic, or structural causes. They can be asymptomatic as they are in the vast majority of people but when they start to cause problems such as intermitant or complete obstruction(biliary colic or cholecystitis) cholecystectomy should be considered.