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Xanthogranulomatous pyelonephritis (XGP) is an uncommon, severe, and persistent inflammatory renal condition characterised by the destruction of renal parenchyma, which is replaced with granulomatous tissue harbouring lipid-laden macrophages. This illness is primarily caused by persistent kidney infections coupled with blockage, frequently due to kidney stones. Typically, Xanthogranulomatous pyelonephritis affects only one kidney and may resemble kidney cancer on imaging due to its tumor-like appearance and potential for spreading. Fever, flank discomfort, lethargy, urine problems, and weight loss are all common signs, which makes it difficult to diagnose early. The condition can spread to surrounding tissues and organs, and it can even cause fistulas.

After antibiotics take care of acute infections, the conventional treatment is to surgically remove the damaged kidney (nephrectomy). To avoid problems like sepsis, abscess formation, and kidney failure, it is very important to find and treat them quickly. XGP mostly affects middle-aged men and women, with about 1.4 instances per 100,000 people per year. Histopathological investigation corroborates the diagnosis by identifying the distinctive yellowish, lipid-laden macrophages. Long-term preoperative antibiotics can enhance surgical results by mitigating inflammation and postoperative problems.