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Developmental Abnormalities
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Intralobar Sequestration
Intralobar Sequestration
Tyler H. Ternes, MD
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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
Intralobar sequestration (ILS)
Definitions
From Latin "sequestrare" (to be separated)
ILS (~ 75%)
Shares visceral pleura of affected lobe
Pulmonary sequestration
No normal communication with tracheobronchial tree
Systemic blood supply
Extralobar sequestration (~ 25%)
Supernumerary lung tissue
Separate pleural investment when intrathoracic
Bronchopulmonary foregut malformation
Pulmonary sequestration (extralobar sequestration or ILS) with patent foregut communication (esophagus, stomach) (rare)
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Angiographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Alamo L et al: Revising the classification of lung sequestrations. Clin Imaging. 77:92-7, 2021
Gabelloni M et al: Pulmonary sequestration: what the radiologist should know. Clin Imaging. 73:61-72, 2020
Romberg EK et al: Applications of pediatric body CT angiography: what radiologists need to know. AJR Am J Roentgenol. 214(5):1019-30, 2020
Zhang N et al: Distribution, diagnosis, and treatment of pulmonary sequestration: Report of 208 cases. J Pediatr Surg. 54(7):1286-92, 2019
Alsumrain M et al: Pulmonary sequestration in adults: a retrospective review of resected and unresected cases. BMC Pulm Med. 18(1):97, 2018
Qi W et al: Intralobar pulmonary sequestration displayed as localized emphysema on computed tomography image. J Cardiothorac Surg. 12(1):83, 2017
Walker CM et al: The imaging spectrum of bronchopulmonary sequestration. Curr Probl Diagn Radiol. 43(3):100-14, 2014
Biyyam DR et al: Congenital lung abnormalities: embryologic features, prenatal diagnosis, and postnatal radiologic-pathologic correlation. Radiographics. 30(6):1721-38, 2010
Lee EY et al: Multidetector CT evaluation of congenital lung anomalies. Radiology. 247(3):632-48, 2008
Newman B: Congenital bronchopulmonary foregut malformations: concepts and controversies. Pediatr Radiol. 36(8):773-91, 2006
Corbett HJ et al: Pulmonary sequestration. Paediatr Respir Rev. 5(1):59-68, 2004
Zylak CJ et al: Developmental lung anomalies in the adult: radiologic-pathologic correlation. Radiographics. 22 Spec No:S25-43, 2002
Bratu I et al: The multiple facets of pulmonary sequestration. J Pediatr Surg. 36(5):784-90, 2001
Do KH et al: Systemic arterial supply to the lungs in adults: spiral CT findings. Radiographics. 21(2):387-402, 2001
Saygi A: Intralobar pulmonary sequestration. Chest. 119(3):990-2, 2001
Frazier AA et al: Intralobar sequestration: radiologic-pathologic correlation. Radiographics. 17(3):725-45, 1997
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
Intralobar sequestration (ILS)
Definitions
From Latin "sequestrare" (to be separated)
ILS (~ 75%)
Shares visceral pleura of affected lobe
Pulmonary sequestration
No normal communication with tracheobronchial tree
Systemic blood supply
Extralobar sequestration (~ 25%)
Supernumerary lung tissue
Separate pleural investment when intrathoracic
Bronchopulmonary foregut malformation
Pulmonary sequestration (extralobar sequestration or ILS) with patent foregut communication (esophagus, stomach) (rare)
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Angiographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Reporting Tips
Selected References
Alamo L et al: Revising the classification of lung sequestrations. Clin Imaging. 77:92-7, 2021
Gabelloni M et al: Pulmonary sequestration: what the radiologist should know. Clin Imaging. 73:61-72, 2020
Romberg EK et al: Applications of pediatric body CT angiography: what radiologists need to know. AJR Am J Roentgenol. 214(5):1019-30, 2020
Zhang N et al: Distribution, diagnosis, and treatment of pulmonary sequestration: Report of 208 cases. J Pediatr Surg. 54(7):1286-92, 2019
Alsumrain M et al: Pulmonary sequestration in adults: a retrospective review of resected and unresected cases. BMC Pulm Med. 18(1):97, 2018
Qi W et al: Intralobar pulmonary sequestration displayed as localized emphysema on computed tomography image. J Cardiothorac Surg. 12(1):83, 2017
Walker CM et al: The imaging spectrum of bronchopulmonary sequestration. Curr Probl Diagn Radiol. 43(3):100-14, 2014
Biyyam DR et al: Congenital lung abnormalities: embryologic features, prenatal diagnosis, and postnatal radiologic-pathologic correlation. Radiographics. 30(6):1721-38, 2010
Lee EY et al: Multidetector CT evaluation of congenital lung anomalies. Radiology. 247(3):632-48, 2008
Newman B: Congenital bronchopulmonary foregut malformations: concepts and controversies. Pediatr Radiol. 36(8):773-91, 2006
Corbett HJ et al: Pulmonary sequestration. Paediatr Respir Rev. 5(1):59-68, 2004
Zylak CJ et al: Developmental lung anomalies in the adult: radiologic-pathologic correlation. Radiographics. 22 Spec No:S25-43, 2002
Bratu I et al: The multiple facets of pulmonary sequestration. J Pediatr Surg. 36(5):784-90, 2001
Do KH et al: Systemic arterial supply to the lungs in adults: spiral CT findings. Radiographics. 21(2):387-402, 2001
Saygi A: Intralobar pulmonary sequestration. Chest. 119(3):990-2, 2001
Frazier AA et al: Intralobar sequestration: radiologic-pathologic correlation. Radiographics. 17(3):725-45, 1997
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