A 5-year-old child presents with chronic cough, recurrent pneumonia in the same location, and failure to thrive. CT chest shows a solid mass with systemic arterial supply from the aorta. What is the diagnosis?
- A Bronchogenic cyst
- B Pulmonary sequestration ✓
- C Congenital lobar emphysema
- D Pulmonary interstitial emphysema
Correct answer: B. Pulmonary sequestration
Explanation
Pulmonary sequestration is a congenital malformation where a nonfunctioning lung mass receives systemic arterial blood supply (usually from the aorta), not pulmonary circulation. It predisposes to recurrent infections. Bronchogenic cyst is a mediastinal cystic lesion without systemic arterial supply. Congenital lobar emphysema presents with respiratory distress in infancy due to overinflation.
Reference: Robbins and Cotran Pathologic Basis of Disease, 10th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.