Complications of Gallstones: What Are They? Gallstones are solid particles that form in the gallbladder, a small organ located under the liver that stores bile. Bile helps digest fats, and gallstones form when bile contains excess cholesterol, bilirubin, or other substances. While gallstones are often asymptomatic, they can sometimes lead to serious complications if left untreated.... https://mediend.com/blogs/complications-of-gallstones-what-are-they