Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Congenital mass of dysplastic lung tissue without normal tracheobronchial or vascular connections. The arterial blood supply usually comes from an aortic vessel beneath the diaphragm.
There are two types: (1) Intralobar - the mass is within the pulmonary visceral pleura and drains via pulmonary veins. (2) Extra lobar - the mass is separate with its own pleural investment and drains via systemic veins. It is thought to come from an accessory lung bud. If this bud develops early before the pleura develops it becomes an intralobar sequestration, if this bud develops later, after the pleura develops, it becomes an extralobar sequestration.
Dysplastic lung tissue
The posterior basal segment of the lung is most frequently involved with a slight left sided predominance. Can look like a solid mass, a cystic lesion with and without air fluid levels, or an inflammatory infiltrate.
Section Top | Title Page
Follow us on Twitter @pedseducation and @pedsimaging
Please send us comments by filling out our Comment Form.
All contents copyright © 1992-2015 Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. and the authors. All rights reserved.
"Virtual Pediatric Hospital", the Virtual Pediatric Hospital logo, and "A digital library of pediatric information" are all Trademarks of Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D.
Virtual Pediatric Hospital is funded in whole by Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Virtual Pediatric Hospital is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.