Presentation
Fever, tachypnea and tachycardia.
Patient Data

Airspace consolidation with air bronchograms obscuring the right superior mediastinal contour, in keeping with right upper lobe pneumonia. Sliver of free gas under the right hemidiaphragm. High-flow oxygen mask present.
Case Discussion
This case has two main findings:
- obvious right upper lobe pneumonia
- less obvious free gas under the right hemidiaphragm
How are the two findings related? The patient was 24 hours post-operative for appendectomy, and had developed respiratory symptoms, most likely an aspiration pneumonia given the history and that the right upper lobe is affected.
This case demonstrates a potential satisfaction of search error, where the on spotting the right upper lobe pneumonia further abnormalities are not sought.