Overview
Extrapulmonary subpleural pulmonary sequestration is a rare congenital anomaly characterized by nonfunctioning lung tissue supplied by the systemic circulation rather than the pulmonary artery. It often presents as a cystic mass outside the visceral pleura, typically diagnosed incidentally in adults 1.Diagnosis
Key Diagnostic Criteria: Presence of a cystic mass outside the visceral pleura, supplied by a systemic artery.
Recommended Tests:
- Chest CT scans for initial detection and characterization.
- Contrast-enhanced chest MRI to differentiate from other cystic lesions.
- CT-guided lung aspiration biopsy (when necessary for tissue diagnosis).
- Surgical exploration for definitive diagnosis and management 1.Management
First-Line Treatment: Surgical resection (lobectomy or wedge resection) for definitive management.
Adjunctive Treatments: Not typically required unless complications arise (e.g., infection, hemorrhage).Special Populations
Elderly: Diagnosis can occur in elderly patients; surgical intervention remains the mainstay of treatment despite age 1.Key Recommendations
Consider pulmonary sequestration in the differential diagnosis of cystic lung masses, especially in adults, during imaging evaluations (Evidence: Moderate 1).
Perform contrast-enhanced imaging (MRI or CT) to distinguish pulmonary sequestration from other cystic lung lesions (Evidence: Moderate 1).
Surgical resection is recommended for definitive management and to prevent potential complications (Evidence: Expert opinion 1).References
1 Kim HJ, Shin KE, Park JS, Lee H, Lee JW, Chin S et al.. Intralobar pulmonary sequestration with cystic degeneration mimicking a bronchogenic cyst in an elderly patient: A case report and literature review. Medicine 2020. link