This document discusses gallstones in children. It describes the main types as cholesterol stones and pigment stones. Cholesterol stones are more common in obesity, ileal disease, etc. while pigment stones are more common in hemolytic diseases, cirrhosis, infections. Diagnosis is usually by ultrasound. Treatment involves surgery for symptomatic or complicated cases while smaller asymptomatic cases may be observed. Prevention focuses on managing risk factors like TPN, obesity, chronic diseases.