CTICasesIntralobar Pulmonary Sequestration with Mucoid Impaction
Imaging findings
CT chest shows a mass-like region of bronchial atresia in the left lower lobe with surrounding parenchymal rarefaction, a bubbly cystic appearance, and calcifications. A systemic feeding artery arising directly from the descending thoracic aorta is identified, supplying the sequestered lung segment.
Key takeaways
Intralobar pulmonary sequestration is a congenital anomaly where a segment of lung tissue lacks communication with the normal tracheobronchial tree and receives systemic arterial supply. Secondary changes like bronchial atresia and chronic infection can lead to mucoid impaction, cyst formation, and calcifications, mimicking malignancy.
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