Presentation
Productive cough for weeks
Patient Data
Age: 20 years
Gender: Male
From the case:
Apical segment left lower lobe pneumonia
![](https://prod-images-static.radiopaedia.org/images/14417257/36b7691be19067dc290141b2e6a00ec164e5ffdf4777c35b0148d30c2190cc07_thumb.jpeg)
![](https://prod-images-static.radiopaedia.org/images/14417258/92bb44d97387f904ab49f67b7b6c70ff7400c0f061a27d05d5741f71086a3f11_thumb.jpeg)
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![](https://prod-images-static.radiopaedia.org/images/14417257/36b7691be19067dc290141b2e6a00ec164e5ffdf4777c35b0148d30c2190cc07_big_gallery.jpeg)
Airspace opacification in the apical segment of the LLL in keeping with pneumonia. The pleural spaces are clear. Cardiomediastinal contours are within normal limits. No PTX.
Case Discussion
Classic example of absent silhouette sign and using the lateral CXR to locate the consolidation to the apical segment of the LLL.