Effect of and indication for tonsillectomy in IgA nephropathy

Area of Science:

• Nephrology
• Immunology
• Otolaryngology

Background:

• The exact cause of IgA nephropathy (IgAN) remains unknown despite decades of research.
• Chronic tonsillitis is increasingly suspected as a significant etiological factor in IgAN development.
• Tonsillectomy is being explored as a potential therapeutic intervention for IgAN.

Purpose of the Study:

• To evaluate the clinical efficacy of tonsillectomy in patients with IgA nephropathy and chronic tonsillitis.
• To assess the impact of tonsillectomy on urinary findings and serum markers in IgAN patients.
• To determine the optimal stage of IgAN for considering tonsillectomy.

Main Methods:

• Twenty-six patients diagnosed with IgA nephropathy and chronic tonsillitis underwent tonsillectomy.
• Patients were monitored for two years post-operation to assess clinical outcomes.
• Urinary findings, serum IgA levels, and circulating immune complex (CIC) levels were analyzed before and after surgery.

Main Results:

• Twelve patients (46% efficacy rate) demonstrated significant improvement in urinary findings post-tonsillectomy.
• Efficacy decreased with advancing stages of renal injury.
• Serum IgA levels and CIC levels showed significant reductions after surgery, especially in patients with initially high levels.

Conclusions:

• Tonsillectomy can be beneficial for IgA nephropathy patients with chronic tonsillitis, particularly in milder cases.
• The procedure is contraindicated in patients with advanced renal injury due to the risk of progression to renal failure.
• Changes in urinary erythrocyte counts may serve as a sensitive indicator for tonsillar provocation testing in mild IgAN cases.