Bronchial artery aneurysm in hyperimmunoglobulinemia E syndrome

Area of Science:

• Pediatric Pulmonology
• Interventional Radiology
• Rare Genetic Disorders

Background:

• Hyperimmunoglobulinemia E (hyper IgE) syndrome, also known as Job's syndrome, is a rare primary immunodeficiency.
• Patients with hyper IgE syndrome often present with recurrent sinopulmonary infections and characteristic skin and bone abnormalities.
• Pulmonary complications in hyper IgE syndrome can be severe and include lung abscesses, bronchiectasis, and pneumatoceles.

Observation:

• A 2-year-old female patient with a known diagnosis of hyper IgE syndrome presented with a large cavitating lesion in the right middle lobe.
• The patient experienced life-threatening hemoptysis, indicating significant vascular compromise within the lesion.
• Diagnostic imaging revealed a bronchial artery pseudoaneurysm as the source of bleeding.

Findings:

• Bronchial artery pseudoaneurysm is a rare but critical complication of cavitating lung lesions, particularly in the context of hyper IgE syndrome.
• Successful embolization of the pseudoaneurysm effectively controlled the hemoptysis.
• This case highlights the importance of considering vascular anomalies in patients with cavitating lung lesions and hemoptysis.

Implications:

• Early identification and interventional management of bronchial artery pseudoaneurysms are crucial for preventing fatal hemorrhage in patients with hyper IgE syndrome.
• Embolization offers a minimally invasive and effective treatment option for this life-threatening complication.
• Further research into the specific mechanisms linking hyper IgE syndrome to vascular fragility in the lungs may elucidate preventative strategies.