Banding/Ligation of Hemorrhoids: CRH O’Regan System Make an Appointment Patient Education Find a Doctor Download Patient Education Hemorrhoids are swollen, inflamed blood vessels in the lower rectum or anus caused by increased pressure or straining during bowel movements, or from increased pressure on these veins during pregnancy, amongst other causes. Download PDF: Banding/Ligation of Hemorrhoids: CRH O’Regan System Download PDF: Banding/Ligation of Hemorrhoids: CRH O’Regan System View more information on Banding/Ligation of Hemorrhoids: CRH O’Regan System National Jewish Health authors free downloadable patient education materials to provide you and your family the information and tools to help manage your disease. They include Understanding Booklets, Med Facts, Test Facts, Medication handouts and more. Search Free Education Materials