Acronym

RML - Right Middle Lobe

Right Middle Lobe

Middle lobe of right lung (unique to right side)

Expansion

Right Middle Lobe

Purpose

Assess for pneumonia, atelectasis, middle lobe syndrome

Clinical Context

Right middle lobe: 2 segments (medial, lateral). Borders anterior mediastinum and right heart border. Right middle lobe pneumonia equals alveolar consolidation obscuring right heart border.

  • Right lower lobe
  • Right upper lobe

Key Points

  • “Right middle lobe syndrome: chronic atelectasis from compressed middle lobe bronchus”