BILIARY STONES MAP INTRAHEPATIC (hepatolithiasis) Mainly brown pigment + cholesterol stones GALLBLADDER (cholecystolithiasis) Cholesterol or black pigment stones EXTRAHEPATIC (choledocholithiasis) Primary: brown pigment Secondary Gallstones Symptoms, Causes and Treatment Guts UK Recent investigation of the medicinal plants' effectiveness in the natural management of urinary and gallstones: a review ScienceDirect Your liver and gallbladder explained The Maas Clinic Plasma Glutathione Peroxidase (GPX1) Levels and Oxidative Stress in Gallstone Patients Operated with Two Different Cholecystectomy Techniques: A Randomized Study with Special Reference to Cancer Patients Anticancer Research Plasma Glutathione Peroxidase (GPX1) Levels and Oxidative Stress in Gallstone Patients Operated with Two Different Cholecystecto