Xanthogranulomatous pyelonephritis due to Aspergillus in a non-diabetic older patient

Neha Khilar1, Navneet Gupta1, Prabha Adhikari2

  • 1Internal Medicine, Yenepoya Medical College Hospital, Mangalore, Karnataka, India.

BMJ Case Reports
|September 17, 2021
PubMed

Insights

This case study highlights a rare instance of primary renal aspergillosis and xanthogranulomatous pyelonephritis in an immunocompetent older adult. Treatment involved antifungal therapy and nephrectomy, leading to symptom resolution.

Area of Science:

  • Nephrology
  • Mycology
  • Infectious Diseases

Background:

  • Xanthogranulomatous pyelonephritis (XGP) is a rare, destructive inflammatory condition of the kidney.
  • Primary renal aspergillosis typically affects immunocompromised individuals.
  • Risk factors for XGP and renal aspergillosis are well-documented, usually involving compromised immune status.

Observation:

  • A unique case of an older adult (early 60s) presented with fever and left flank pain.
  • The patient was diagnosed with primary renal aspergillosis concurrently with xanthogranulomatous pyelonephritis.
  • Notably, the patient had no underlying immunocompromising conditions or other typical risk factors.

Findings:

  • The patient's symptoms of fever and flank pain resolved following treatment.
  • Treatment consisted of a prolonged course of antifungal medication (itraconazole) and a nephrectomy.
  • This case demonstrates fungal pyelonephritis and xanthogranulomatous changes in the absence of predisposing factors.

Implications:

  • This case expands the understanding of renal aspergillosis and XGP, suggesting they can occur in immunocompetent individuals.
  • It underscores the importance of considering these diagnoses even without typical risk factors.
  • Further research may be needed to elucidate the pathogenesis in immunocompetent hosts.

Related Concept Videos

Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...
95
Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
75
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
89
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
412
Fungal Phylum Ascomycota01:28

Fungal Phylum Ascomycota

Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
339
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
25