000 Sequestration – Intralobar Sequestration nonfunctional and dysplastic lung tissue that is lacking a normal connection to the tracheobronchial tree and the pulmonary arteries and possessing an aberrant arterial blood supply, Read More: https://www.ajronline.org/doi/10.2214/AJR.05.0155?mobileUi=0 Intralobar sequestrations (ILS) are located within a normal lobe lack their own visceral pleura. occur in the lower lobes, about60 percent are located in the posterior basal segment of the left lower lobe can occur anywhere within the thorax rare instances of bilateral ILS ( or ILS with contralateral extralobar sequestration have been reported [23]. T no bronchial connection to the proximal airway. pores of Kohn may cause recurrent infection, connections to the gastrointestinal tract +/-10 percent, Difference Intralobar and Extralobar Pulmonary Sequestration SEQUESTRATIONGross pathology specimen of a resected sequestration of the lung. and Ashley Davidoff TheCommonVein.net 32302 Keywords:lungs pulmonary congenital growth sequestration gross pathology (A) An axial CT scan of a 26-year-old man with an intralobar sequestration shows a heterogeneous subsegmental soft tissue density in the left lower lobe . An artery arising from the descending aorta supplies the sequestration.Ashley Davidoff TheCommonVein.net Pulmonary Sequestration An axial CT scan (top) of a 31-year-old woman with an intralobar sequestration shows a left lower pneumonia (arrowhead) with a surrounding region of emphysema . A reformatted coronal image (bottom) shows a systemic artery arising from the descending aorta (arrow) that supplies the sequestration. Ashley Davidoff TheCommonvein.net Imaging of pulmonary sequestration. R E Felker, I L Tonkin American Journal of Roentgenology. 1990;154:241-249. 10.2214/ajr.154.2.2105007