An infiltrate looks like a shadow on a chest x-ray. There can be many causes, such as:
· an infection, like pneumonia or tuberculosis (TB);
· a
blockagePeripheral artery disease of an airway by a tumor or mucus; or
· a non-infectious pneumonia usually caused by something inhaled or aspirated.
You will need to check with your doctor to know what would be causing your infiltrate and the best treatment. A chest CT scan is more sensitive and shows more detail than a chest x-ray, so this may be the next test that is done.