RT Book, Section
A1 Zellos, Lambros
A2 Sugarbaker, David J.
A2 Bueno, Raphael
A2 Burt, Bryan M.
A2 Groth, Shawn S.
A2 Loor, Gabriel
A2 Wolf, Andrea S.
A2 Williams, Marcia
A2 Adams, Ann
SR Print(0)
ID 1170411978
T1 Pulmonary Sequestration
T2 Sugarbaker’s Adult Chest Surgery, 3e
YR 2020
FD 2020
PB McGraw-Hill Education
PP New York, NY
SN 9781260026931
LK accesssurgery.mhmedical.com/content.aspx?aid=1170411978
RD 2023/03/25
AB Pulmonary  sequestration  is  a  congenital  syndrome  characterized  by  abnormal  systemic  blood  supply  to  the  lung,  usually  the  lower  lobe.  The  anomaly  causes  a  predisposition  for  pulmonary  complications  such  as  infection  and  hemoptysis.  There  are  two  types  of  sequestrations:  intralobar  and  extralobar.  As  the  name  implies,  the  intralobar  sequestration  is  located  within  the  normal  lung  (Fig.  97-1),  whereas  the  extralobar  sequestration  is  separate  from  the  normal  lung,  enclosed  in  its  own  pleural  envelope  (Fig.  97-2).  One  should  be  aware  of  other  associated  anomalies  such  as  abnormal  communication  of  the  bronchial  tree,  systemic  venous  drainage,  rare  communication  to  the  foregut,  and  diaphragmatic  hernia  (Table  97-1).  In  addition,  the  aberrant  systemic  vessel  can  arise  from  any  systemic  intrathoracic  or  upper  abdominal  vessel,  including  the  aorta,  the  subclavian  artery,  and  even  the  coronary  arteries.  Although  they  are  most  commonly  found  in  the  left  lower  lobe,  sequestrations  also  occur  in  the  right  lower  lobe  and  the  left  or  right  upper  lobe.