Surgery Regarding stones in gall bladder the following are true except: A Mixed stones are common in the west B In Saints triad diverticulosis of colon and hiatus hernia co exist C 90% of gall stones are radio-opaque D Is a risk factor in the development of GB carcinoma 💡 Explanation Regarding stones in gall bladder the following are true except: ✓ Correct Answer: C. 90% of gall stones are radio-opaque