Rare Tracheal Bronchus in Pediatric Patient with Noonan Syndrome Leads to Lung Abscess

Strategic Insights -

A 13-year-old male patient with Noonan syndrome, pulmonary valve stenosis, and von Willebrand disease presented with chest pain, fever, and chronic vomiting. Computed tomography revealed a right upper lobe pulmonary cavitation, which was later diagnosed as a cavitary lung abscess secondary to a tracheal bronchus. The patient was treated with antibiotics and made a full recovery. This case highlights the importance of recognizing tracheobronchial abnormalities in patients with underlying congenital heart disease.

Key Takeaways:

  • A tracheal bronchus is a rare anatomical abnormality in the pediatric population, often found in patients with underlying congenital heart disease.
  • Co-existing tracheobronchial anomalies are common in patients with congenital heart disease, and prompt recognition and treatment are crucial to prevent future pathology.
  • The presence of a tracheal bronchus can lead to respiratory complications, including lung abscesses, which require multidisciplinary approach for evaluation and treatment.
  • The patient's splenomegaly (18.8 x 13.8 x 6.4 cm) contributed to chronic vomiting with aspiration, which may have exacerbated the development of the lung abscess.
  • The case study demonstrates the importance of a thorough workup, including bronchoscopy and broad-range polymerase chain reaction analysis, for diagnosing underlying tracheobronchial abnormalities.
  • The patient's treatment involved six weeks of antibiotic therapy, which led to a successful outcome.

Statistics:

  • The patient was 13 years old at the time of diagnosis.
  • The lung abscess was located in the right upper lobe.
  • The patient's splenomegaly was 18.8 x 13.8 x 6.4 cm.
  • Treatment involved six weeks of antibiotic therapy.
  • The case study highlights the significance of recognizing tracheobronchial abnormalities in patients with underlying congenital heart disease.

Sources:

  • Cavitary Lung Abscess Secondary to a Tracheal Bronchus: A Pediatric Patient With Noonan Syndrome. Cureus, 2025;17(8).
  • NewsRx. Researchers from Marshall University Discuss Findings in Congenital Heart Disease (Cavitary Lung Abscess Secondary to a Tracheal Bronchus: A Pediatric Patient With Noonan Syndrome). Respiratory Therapeutics Week. October 13, 2025; p 640.