Left lower lobe posterior segment

Dr Phillip Marsh and Dr Craig Hacking et al.

The left lower lobe posterior or posterior basal segment is one of the four bronchopulmonary segments of the left lower lobe. It is the most inferoposterior of the segments in the left lower lobe, below the superior segment.

Related pathology

Due to its low and posterior position, pathology in the left lower lobe posterior segment can produce opacification that may only been present on the lateral chest radiograph at the posterior costophrenic angle.

Anatomy: Thoracic
Share article

Article information

rID: 38918
System: Chest
Section: Anatomy
Synonyms or Alternate Spellings:
  • Left lower lobe posterior basal segment
  • Posterior segment of the left lower lobe
  • Posterior segment of left lower lobe

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Figure 1: left sided bronchi
    Drag here to reorder.
  • Drag
    Figure 2: Bronchopulmonary Segments: annotated CT
    Drag here to reorder.
  • Drag
    Bronchial anatomy (left): annotated CT
    Drag here to reorder.
  • Updating… Please wait.

    Alert accept

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

    Alert accept Thank you for updating your details.