Acronym

LUL - Left Upper Lobe

Left Upper Lobe

Superior lobe of left lung; contains 4 to 5 segments

Expansion

Left Upper Lobe

Purpose

Assess for apical tuberculosis, primary malignancy, pneumonia

Clinical Context

Left upper lobe: apical-posterior, anterior, superior lingula, inferior lingula. More segments than right upper lobe due to lingular subdivision.

  • Left lower lobe
  • Lung segments

Key Points

  • Left upper lobe contains lingula (analogous to right middle lobe); left upper lobe pneumonia common in aspiration or pneumonia