X-ray Reference
Learn chest X-ray patterns

Chest X-ray finding guides and interpretation terms

Use these pages to understand common chest X-ray findings, broad report terms, and the limits of image-only interpretation. The goal is practical educational context, not diagnosis.

Start with the most useful guides

Pleural Effusion

Pleural effusion means fluid has collected around the lung in the pleural space, often creating blunting or layered whiteness on chest X-ray.

Pneumothorax

Pneumothorax means air has collected in the pleural space and may partly or fully collapse the lung.

Pneumonia

Pneumonia is a lung infection that often creates patchy or focal opacity on chest imaging, though early films can still be subtle or even normal.

Cardiomegaly

Cardiomegaly means the heart silhouette looks enlarged on chest imaging, though projection and technique can affect how large it appears.

Pulmonary Edema

Pulmonary edema means fluid has built up inside the lungs and often creates bilateral or central opacity patterns on chest imaging.

Atelectasis

Atelectasis means part of the lung is not expanding fully and often appears as opacity combined with signs of volume loss on X-ray.

Interpretation terms and basics

These are the broad terms people often search before they know the exact finding or cause.