Dear XXXXXX:, about 15% of adrenal cases are bilateral, and require a second surgery. No we don't just go in and take both out, unless they are both abnormal. Bilateral adrenalectomies run about a 50% risk of taking lifelong medication, and the number would probably be higher if it was easier to do a total right adrenalectomy removal. It's best for the ferret to take the abnormal one out - 85% will probably not need another surgery. With kindest regards, Bruce H. Williams, DVM, DACVP Join the Ferret Health List at http://groups.yahoo.com/group/Ferret-Health-list [Posted in FML issue 3356]