CONGENITAL LUNG MALFORMATIONS Sequestration
Sequestration Congenital mass of aberrant pulmonary tissue that has no Normal connection with the bronchial tree OR the pulmonary Arterial system. Lung parenchyma can be normal or dysplasic Two types: intra and extralobar, differentiated according the venous drainage: “intralobar” drenate to left atrium and “extralobar” throug systemic venous plexus.
INTRALOBAR (75%) Visceral pleura Adults (recurrent neumonías) Acquired (Chronic inflamation?¿) 15% congenital anomalies associated. EXTRALOBAR (25%) Own pleural covering First six months Developmental 50% congenital anomalies associated (diaphragmatic hernia, cardiac, hybrid forms CCAM/sequestration) Do not contain air,unless infection or gastrointestinal communication¡¡¡
Pulmonary sequestration: left lower lobe consolidation that persists more than 4 weeks despite correct treatment.
Pulmonary sequestration: CT showing a mass in the posterior segment of the left lower lobe
Pulmonary sequestration: CT sagital view showing a feeding artery arising from the aorta and irrigating the pulmonary mass
Pulmonary sequestration: bilateral and communication with esophagus. Do not contain air, unless infection or gastrointestinal communication¡¡¡ Pulmonary sequestration: bilateral and communication with esophagus.