[Wegener's granulomatosis in childhood]

Area of Science:

• Pediatric Rheumatology
• Granulomatosis with Polyangiitis

Background:

• Wegener granulomatosis (WG), now known as Granulomatosis with Polyangiitis (GPA), is a rare autoimmune vasculitis affecting small to medium-sized blood vessels.
• Childhood GPA is exceptionally rare, presenting unique diagnostic and management challenges compared to adult-onset disease.

Observation:

• A 12-year-old boy presented with multisystem involvement including airways, kidneys, skin, joints, and eyes.
• Diagnostic confirmation involved clinical assessment, laboratory tests, advanced imaging (ultrasound, X-ray, CT, MRI), and tissue biopsies.
• The patient met four of five modified American College of Rheumatology diagnostic criteria for GPA.

Findings:

• Initial treatment with corticosteroids and cyclophosphamide resolved renal manifestations.
• Despite treatment, progressive upper and central airway damage occurred, leading to subglottic stenosis.
• The patient required urgent tracheostomy for airway management.
• Remission was achieved after 13 months with high-dose corticosteroids and cyclophosphamide, but complications persisted.

Implications:

• This case underscores the potential for severe, life-threatening complications in childhood GPA, even with aggressive therapy.
• Subglottic stenosis represents a significant and challenging complication requiring surgical intervention.
• The study highlights the need for vigilant monitoring for both disease activity and treatment-related side effects in pediatric GPA patients.