Fig. 1From: Imaging of haemodialysis: renal and extrarenal findings a–b: a Grey-scale US and (b) unenhanced CT, coronal reformations. Papillary calcifications in a patient undergoing long-term dialysis, appearing as hyperchoic spots on renal pyramids. Papillary calcifications may also be observed in analgesic nephropathy, in sarcoidosis, primary hyperparathyroidism, diabetes mellitus and medullary sponge kidneyBack to article page