Which finding is NOT typically associated with a normal chest X-ray?

The presence of fluid in the pleural space is indeed not typically associated with a normal chest X-ray. In a normal chest X-ray finding, one expects to see clear lung fields, which indicate the absence of any opacities that could suggest infection, fluid, or other pathological conditions. This absence of abnormal findings allows for the visual clarity of the lung parenchyma.

Additionally, a well-defined cardiac silhouette is another hallmark of a normal chest X-ray. This indicates that the heart size is within normal limits and that there are no extraneous shadows suggesting cardiomegaly or other cardiac abnormalities.

Symmetrical diaphragms are also a normal finding on a chest X-ray, as an asymmetrical presentation could indicate issues like pleural effusion or diaphragmatic hernia.

In contrast, the presence of fluid in the pleural space, known as pleural effusion, is an abnormal finding that would indicate an underlying condition such as infection, malignancy, or heart failure. Therefore, it accurately represents a deviation from normality on a chest X-ray.