TY - CHAP M1 - Book, Section TI - Cholelithiasis A1 - Doherty, Gerard M. Y1 - 2010 N1 - T2 - Quick Answers Surgery AB - • Divided into symptomatic and asymptomatic• Caused by cholesterol (most common), black pigment, or brown pigment stones• Cholesterol stones form in 20% of women and 10% of men by age 60• Cholesterol stone risk factors include:-Female gender-Age-Obesity-Estrogen exposure-Fatty diet-Rapid weight loss• Black pigment stone risk factors include:-Hemolytic disorders-Living in Asia• Brown pigment stone risk factors include:-Biliary stasis-Biliary infections SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/10/13 UR - accesssurgery.mhmedical.com/content.aspx?aid=58107387 ER -