RT Book, Section
A1 Hay, Jr, William W.
A1 Levin, Myron J.
A1 Deterding, Robin R.
A1 Abzug, Mark J.
SR Print(0)
ID 1145458205
T1 Pulmonary Sequestration
T2 Quick Medical Diagnosis & Treatment Pediatrics
YR 2017
FD 2017
PB McGraw-Hill Education
PP New York, NY
SN 9781264257614
LK accesspediatrics.mhmedical.com/content.aspx?aid=1145458205
RD 2024/04/18
AB Defined  as  nonfunctional  pulmonary  tissue  that  does  not  communicate  with  the  tracheobronchial  tree  and  receives  its  blood  supply  from  one  or  more  anomalous  systemic  arteriesClassified  as  either  extralobar  or  intralobarExtralobar  sequestrationA  mass  of  pulmonary  parenchyma  anatomically  separate  from  the  normal  lung,  with  a  distinct  pleural  investmentAppears  as  a  solitary  thoracic  lesion  near  the  diaphragmSize  varies  from  0.5  cm  to  12  cmIntralobar  sequestrationAn  isolated  segment  of  lung  within  the  normal  pleural  investment  that  often  receives  blood  from  one  or  more  arteries  arising  from  the  aorta  or  its  branchesUsually  found  within  the  lower  lobes  (98%),  two-thirds  are  found  on  the  left  side,  and  it  is  rarely  associated  with  other  congenital  anomalies  (<  2%  vs  50%  with  extralobar  sequestration)Rarely  presents  in  the  newborn  period  (unlike  extralobar  sequestration)Some  researchers  have  hypothesized  that  intralobar  sequestration  is  an  acquired  lesion  secondary  to  chronic  infection