[Cholesterol biliary lithiasis (risk factors)].

The prevalence of gallstone disease in the world is heterogenous, it exist a wide range between different geographic areas, sex and age groups. Its distribution seems to be influenced by various factors such as age, sex, socieconomic class, genetic and ethnic influences and diseases like diabetes mellitus and obesity. Therefore, in this study, we will analyse the importance of each of those factors in the development of cholesterol gallstone disease.