Medical decision-making in geriatric medicine: “An 88-year-old man with preterminal renal failure, a 14 cm renal mass and good quality of life: to operate or not?”: A.W.E. Weverling-Rijnsburger 1, H. Frericks 2, J. Kievit 2, A.E. Meinders 1, A.M. Lagaay 1. 1 Department of General Internal Medicine and Geriatrics and 2 Department of Medical Decision-Making, University Hospital, Leiden, Netherlands