NIH Chest X-ray Reference Library
Browse reference chest X-rays from a curated NIH-derived subset, inspect represented labels, and jump into deeper reading where topic pages exist.
Atelectasis
Atelectasis means part of the lung is not fully expanded. It can happen from shallow breathing, mucus blockage, or pressure around the lung and is not the same thing as an infection by itself.
Cardiomegaly
Cardiomegaly means the heart appears enlarged on the chest X-ray. It is a descriptive imaging finding that can be related to heart strain, chronic pressure or volume changes, or even projection effects.
Consolidation
Consolidation refers to air-space filling that makes part of the lung appear denser on imaging.
COPD / Emphysema
COPD and emphysema are chronic lung diseases that can change chest X-ray appearance but are not diagnosed by X-ray alone.
Fracture
Fracture is a break or structural disruption in bone that may be obvious or subtle on X-ray.
Heart Failure
Heart failure is a clinical syndrome in which the heart cannot pump or fill effectively enough to meet the body’s needs.
Lung Opacity
Lung opacity is a broad imaging term for an area of increased density in the lung.
Mass
A mass is a larger focal opacity or lesion seen on the image. It is a descriptive finding that can have several causes and usually needs more imaging or clinical context to characterize.
Nodule
A nodule is a small rounded opacity in the lung or chest field. It is a descriptive imaging finding that can be benign or more concerning depending on size, appearance, and context.
Pleural Effusion
Pleural effusion means extra fluid has collected around the lung in the pleural space. It can happen with heart problems, infection, inflammation, or other underlying conditions.
Pneumonia
Pneumonia is an infection of the lung tissue, often caused by bacteria, viruses, or less commonly fungi. On chest X-ray it can appear as focal or patchy air-space opacity, though imaging alone does not always prove the cause.
Pneumothorax
Pneumothorax means air is present outside the lung in the pleural space, which can allow part of the lung to collapse. It is an important imaging finding because the size and clinical impact can vary widely.
Pulmonary Edema
Pulmonary edema refers to fluid accumulation within the lungs, often linked to cardiac or noncardiac causes.
Support Devices
Support devices on chest X-ray include lines, tubes, and implanted hardware whose position may affect safety and management.
Tuberculosis
Tuberculosis is an infectious disease that can affect the lungs and create chest imaging abnormalities, but imaging alone cannot confirm it.
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Use body part and finding filters to narrow the reference set.
Body part
Showing up to 90 reference images for Mass.
MassPAT-4639 · IMG-024
AP
MassPAT-C0E5 · IMG-001
PA
MassPAT-50E5 · IMG-008
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MassPAT-D7A5 · IMG-000
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MassPAT-988D · IMG-003
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MassPAT-2CC3 · IMG-000
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MassPAT-2CC3 · IMG-008
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MassPAT-595E · IMG-013
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MassPAT-595E · IMG-015
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MassPAT-595E · IMG-016
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MassPAT-595E · IMG-017
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MassPAT-595E · IMG-018
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MassPAT-595E · IMG-023
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MassPAT-595E · IMG-024
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MassPAT-C4F1 · IMG-004
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MassPAT-C4F1 · IMG-015
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MassPAT-3407 · IMG-003
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MassPAT-7F34 · IMG-000
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MassPAT-0EB4 · IMG-001
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MassPAT-EA50 · IMG-000
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MassPAT-E306 · IMG-001
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MassPAT-E306 · IMG-008
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MassPAT-290C · IMG-005
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MassPAT-2519 · IMG-021
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MassPAT-08C5 · IMG-000
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MassPAT-08C5 · IMG-002
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MassPAT-6303 · IMG-000
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MassPAT-A559 · IMG-001
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MassPAT-A559 · IMG-002
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MassPAT-A559 · IMG-006
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MassPAT-A559 · IMG-007
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MassPAT-1202 · IMG-001
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MassPAT-215F · IMG-036
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MassPAT-6B57 · IMG-004
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MassPAT-7862 · IMG-004
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MassPAT-06AD · IMG-000
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MassPAT-06AD · IMG-005
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MassPAT-06AD · IMG-006
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MassPAT-06AD · IMG-007
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MassPAT-F52A · IMG-005
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MassPAT-2641 · IMG-001
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MassPAT-26A3 · IMG-015
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MassPAT-17FC · IMG-000
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MassPAT-B09C · IMG-000
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MassPAT-723D · IMG-000
PA
MassPAT-4AD8 · IMG-000
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MassPAT-EEAA · IMG-000
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MassPAT-4F3F · IMG-004
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MassPAT-4F3F · IMG-024
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MassPAT-B515 · IMG-000
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MassPAT-7BFE · IMG-003
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MassPAT-110C · IMG-001
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MassPAT-7FF0 · IMG-008
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MassPAT-7FF0 · IMG-010
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MassPAT-5517 · IMG-002
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MassPAT-5517 · IMG-003
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MassPAT-5517 · IMG-005
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MassPAT-0410 · IMG-000
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MassPAT-C322 · IMG-018
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MassPAT-C322 · IMG-019
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MassPAT-2F7C · IMG-000
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MassPAT-F080 · IMG-000
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MassPAT-F080 · IMG-002
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MassPAT-F080 · IMG-003
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MassPAT-F080 · IMG-004
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MassPAT-3FD9 · IMG-000
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MassPAT-3FD9 · IMG-020
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MassPAT-531A · IMG-003
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MassPAT-BBAD · IMG-009
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MassPAT-0AEE · IMG-001
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MassPAT-0BD0 · IMG-008
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MassPAT-0BD0 · IMG-009
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MassPAT-0BD0 · IMG-010
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MassPAT-1446 · IMG-003
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MassPAT-7E49 · IMG-000
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MassPAT-4DA0 · IMG-001
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MassPAT-3BDB · IMG-008
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MassPAT-9DD1 · IMG-000
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MassPAT-9DD1 · IMG-001
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MassPAT-9A41 · IMG-012
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MassPAT-E1D6 · IMG-006
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MassPAT-E1D6 · IMG-034
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MassPAT-E1D6 · IMG-044
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MassPAT-CF01 · IMG-001
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MassPAT-B9B4 · IMG-014
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MassPAT-B9B4 · IMG-015
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MassPAT-B9B4 · IMG-021
PA
MassPAT-F045 · IMG-000
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MassPAT-31EE · IMG-019
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MassPAT-600A · IMG-000
AP