Case 1003

Right lower zone pneumoniaWhat is the diagnosis?

Case image 1 X-ray 1 / 1

Frontal chest radiograph with an arrow from the original source.

Image: Mikael Häggström, M.D., CC0 — source

Answer hidden. Review the images and history, decide on your diagnosis, then reveal.

Findings

  • Airspace opacity in the right mid to lower zone (arrow)
  • The right heart border remains visible, favouring the right lower lobe over the middle lobe
  • No significant volume loss; costophrenic angles clear
  • Left lung clear

Case discussion

Airspace consolidation in a patient with fever and productive cough is most likely pneumonia. Because the right heart border is preserved, the opacity is probably posterior, in the lower lobe — a lateral view would confirm this.

Consolidation keeps lung volume, unlike collapse. Radiographic resolution lags behind clinical recovery; a follow-up film at about six weeks is often advised in smokers and older adults to exclude an underlying lesion.

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