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
        • SEQUESTRATION
          Gross 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
        • American Journal of Roentgenology. 1990;154:241-249. 10.2214/ajr.154.2.2105007