Pulmonary sequestration (intralobar)

Intralobar pulmonary sequestration (ILS) is a subtype of pulmonary sequestration

Patients usually present before the third decade with recurrent infection.

It is the commoner type of pulmonary sequestration (four times commoner than extralobar sequestration), accounting for 75% of all sequestrations and is characterised by the sequestration surrounded by normal lung tissue without its own pleural covering.

There is increasing data to support the concept of sequestrations stemming from recurrent infections that produce aberrant arterial vessels arising from the aorta 6. Feeding vessels include branches from the thoracic aorta (75%), abdominal aorta, intercostal artery or multiple arteries.

Location

There is strong predilection towards the lower lobes (predominantly left lower lobe).

Surgical excision is the mainstay of treatment.

On imaging possible differential considerations include

Share article

Article information

rID: 25579
Systems: Chest, Paediatrics
Section: Pathology
Tags: stub, cases
Synonyms or Alternate Spellings:
  • Intra lobar sequestration
  • Intra lobar lung sequestration
  • Intra lobar pulmonary sequestration
  • Intra-lobar pulmonary sequestrations
  • Intra lobar pulmonary sequestration

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1
    Drag here to reorder.
  • Drag
    Case 2
    Drag here to reorder.
  • Drag
    Case 3
    Drag here to reorder.
  • Drag
    Case 4
    Drag here to reorder.
  • Drag
    Case 5
    Drag here to reorder.
  • Drag
    Case 6
    Drag here to reorder.
  • Drag
    Two feeding branc...
    Case 7
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.