Case 187 Medical history A 67-year-old female patient with chronic kidney disease (CKD) stage 5 in dialysis is admitted to the nephrology service for treatment of pyelonephritis. She is hypertensive, medicated and controlled. Displays history of repeated episodes of sepsis with probable renal focus. At admission the patient was pale (2+/4+), with mild hepatosplenomegaly and palpable masses in topography of kidneys. All other parts of the examination remain unchanged. Image 1: Abdominal Computed Tomography (CT), axial section, lumbar region, after intravenous injection of iodinated contrast.Image 2: Abdominal and pelvic Computed Tomography (CT), coronal reconstruction, after intravenous injection of iodinated contrast.Image 3: Abdominal Computed Tomography (CT), axial section, hepatic level after intravenous injection of iodinated contrast. Question:By analyzing the images and clinical history of the patient, which is the most likely etiology of chronic kidney disease? Chronic obstructive nephropathy Amyloidosis Diabetes mellitus Polycystic kidney disease Time is Up! Time's up