Senile chronic pyelonephritis

Urinary tract infection is a common disease in the elderly, and pyelonephritis is an important clinical type of urinary tract infection. It is an infectious inflammation of the renal pelvis, calyces and renal parenchyma directly caused by bacteria (very few fungi, viruses, protozoa, etc.). Pyelonephritis has occurred for many times or the disease has not healed. The course of disease is more than 6 months, and there are deformation and narrowing of the renal pelvis and calyces, and the sizes of the two kidneys are different, Patients with uneven appearance or continuous decline of renal tubular function can be diagnosed as chronic pyelonephritis. The course of chronic pyelonephritis is not clear, and patients with renal function decline after the control of acute symptoms can also be diagnosed as chronic pyelonephritis. Some scholars reported 181 cases of chronic pyelonephritis, only 11% had acute history.