Chen HC, et al. - The utility of abdominal aortic calcification (AAC) score in the estimation of coronary artery disease (CAD) occurrence in middle-aged peritoneal dialysis (PD) patients, was examined herein. CAD occurrence in PD patients could be predicted by AAC score. The main factors identified to be associated with higher AAC score included age, diabetes, hypertension, dialysis vintage and low serum potassium level.