cystic pyelitis

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inflammation of the renal pelvis, a fairly common disease that usually can be diagnosed and cured without great difficulty. Prompt and effective treatment is necessary to prevent the spread of infection and the development of pyelonephritis, which in its chronic form is a severely disabling disease in which damage to the kidney cells may lead to high blood pressure and uremia. adj., adj pyelit´ic.
Cause. Pyelitis is usually caused by a microorganism such as Escherichia coli or (less often) streptococci or staphylococci, which may invade the kidneys by way of the blood. It may also arise from an infection of the bladder (cystitis). It is most common among young children, affecting females far more often than males because the urethra is shorter in the female than in the male. This favors the entrance of ascending infections from the outside into the bladder. Female children not properly trained in their toilet habits will, after bowel movements, rub the toilet tissue from the anus forward toward the urethra rather than vice versa. In this way the bacteria commonly found in fecal matter can find their way into the urinary bladder and from there to the renal pelvis.

Any urinary obstruction can sharply increase the chances of the development of pyelitis, since obstruction interferes with the normal ability of the kidney to rid the body of harmful bacteria.
Symptoms. Probably the most common symptoms of pyelitis are frequency and urgency of urination and dysuria. Other possible symptoms include fever, chills, headache, and pain in one or both sides of the lower back. Pyelitis may also be present without any outward symptoms, but urinalysis will reveal many pus cells and occasionally erythrocytes.
Treatment. Pyelitis and pyelonephritis can usually be treated successfully with sulfonamides. Certain antibiotics and the urinary antiseptics are also helpful. If the disease is treated promptly, the patient can look forward to early and complete recovery.
cystic pyelitis pyelitis with formation of multiple submucosal cysts.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
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