Which is a possible finding on a Chest X-ray (CXR)?

A possible finding on a Chest X-ray (CXR) is pneumonia. When pneumonia is present, the X-ray may show areas of opacity in the lungs due to consolidation, which indicates the presence of fluid, pus, or other substances in the lung tissue. This can manifest as localized infiltrates or ground-glass opacities depending on the type and severity of the pneumonia. Identifying pneumonia through CXR is a common practice, as it helps in diagnosing and guiding treatment for patients with respiratory symptoms.

In contrast, the other conditions listed—cholecystitis, ischemic gut, and carotid dissection—are not primarily evaluated using a chest X-ray. Cholecystitis, which refers to inflammation of the gallbladder, is typically assessed with abdominal imaging techniques such as ultrasound or CT scan. Ischemic gut, or bowel ischemia, is also better visualized using abdominal imaging modalities that can assess blood supply to the intestines. Carotid dissection, involving the arteries supplying blood to the brain, requires imaging of the carotid arteries, typically using ultrasound or CT angiography, rather than a chest X-ray. Therefore, these conditions would not be expected findings on a CXR.