Acronym

LLL - Left Lower Lobe

Left Lower Lobe

Inferior lobe of left lung

Expansion

Left Lower Lobe

Purpose

Common site for pneumonia, aspiration

Clinical Context

Left lower lobe posterior basal segment dependent for effusion or aspiration. Can be obscured by cardiac silhouette on posteroanterior chest film.

  • Right lower lobe
  • Left upper lobe

Key Points

  • Left lower lobe pneumonia may be obscured by heart shadow; lateral view helps visualise