Adult chest radiograph in the exam setting
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A chest radiograph in the exam setting may contain a vast variety of pathology. However, consider the history and correlate the likely diagnoses that may be demonstrated on film. Furthermore, check your review areas to ensure that the abnormality is not at the corner of the film.
When you are presented with an adult chest radiograph in the exam setting and you see an abnormality, you need to work out where it is. Simple, or, at least, it should be by the time you are preparing for your exams.
So, where is the pathology?
outside the chest
The 'normal' film
When confronted with an apparently normal chest x-ray in the radiology exam, it is useful to consider a list of ‘check areas’ and ‘check pathology’.
Check areas (also known as review areas) are areas on the film where pathology can be easily overlooked. Quickly reviewing these areas is essential to avoid missing an important abnormality, especially if the x-ray looks otherwise normal at first glance.
lung apices: Pancoast tumor, pneumothorax
hilum: lymphadenopathy, mass
cardiophrenic and costophrenic recesses: nodules, masses
retrocardiac region: consolidation, nodules
below the diaphragm: free gas, lines and tubes (e.g. nasogastric tube)
bones: fractures, bone lesions
soft tissues: subcutaneous emphysema, mastectomy, surgical clips
Check pathology is a useful concept if to keep in mind if, despite looking at all the common check areas, you still haven’t identified an abnormality. This involves thinking specifically about high yield exam pathology with subtle imaging findings. Many of the examples below are favorites in the radiology viva.
Heart and mediastinum
vertebral body destruction
supraclavicular soft tissue mass