###Human: What does the chest X-ray of a UTI patient show? ###Assistant: Hi. The chest X-ray done shows mildly increased bilateral lung markings and a mildly enlarged cardiac shadow (attachment removed to protect patient identity). There are no serious concerns about this X-ray. In the chest X-ray done a few days later, there is a generalised haziness in the left lung in addition to the prominent lung markings and the mildly enlarged cardiac shadow. Depending on the clinical signs, the possibilities can be a unilateral pneumonia or pulmonary edema. However, in literature, pulmonary edema is usually unilateral on the right side and without cardiac enlargement. In the chest X-ray done four days later, there are randomly distributed peri hilar opacities in the bilateral lungs and on seeing carefully there are air bronchograms and this is likely a picture of disseminated pneumonia. The other possibility being a diffuse pulmonary edema.