Normal vs Abnormal Chest X-ray
A normal chest X-ray usually shows relatively clear lungs, sharp pleural angles, and no major new dense abnormality, while an abnormal X-ray can show opacity, fluid, collapse, enlargement, or device-related findings.
Chest X-ray learning guides
Chest X-ray findings and report terms
Use this hub to browse the main educational pages on chest X-ray findings, report terms, common conditions, and visible support devices. Start with the core topics below, then use the grouped sections or alphabetical guide list to go deeper.
Pick a page to jump straight to the reference.
Top common conditions and findings
If you are new to chest X-ray interpretation, start with these high-frequency guides before branching into the broader library.
Pleural Effusion
Pleural effusion is fluid in the pleural space around the lungs and often appears on chest X-ray as blunted angles, layering fluid, or lower-lung whiteness.
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 focal or patchy air-space opacity on chest X-ray, though early or mild cases can be subtle.
Cardiomegaly
Cardiomegaly is the radiographic appearance of an enlarged heart silhouette on chest X-ray, though projection and technique can affect the measurement.
Pulmonary Edema
Pulmonary edema is fluid inside the lungs that often appears on chest X-ray as bilateral or central opacities, sometimes with vascular congestion or pleural effusions.
Common report terms
These pages explain the words people often see in reports before they know the exact finding or cause.
Priority topic clusters
These grouped paths make it easier to move through closely related findings that often appear together in search and in real report reading.
Fluid overload and heart findings
Move through enlarged heart, edema, effusions, and vascular congestion patterns that commonly overlap on chest X-ray.
Pleural air and fluid findings
Review the main findings linked to pneumothorax, pleural fluid, pleural thickening, and other pleural-space problems.
Devices and support lines
Use these pages for tube, line, and support-device checks that often matter in chest X-ray interpretation.
Lung and pleural findings
Common chest X-ray findings involving air-space opacity, collapse, fluid, or pleural air.
Enlarged Heart on X-ray
An enlarged heart on X-ray usually refers to an enlarged cardiac silhouette, but projection, positioning, and other factors can affect how large it looks.
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.
Elevated Hemidiaphragm
An elevated hemidiaphragm means one side of the diaphragm appears higher than expected on chest X-ray.
Lung Mass on Chest X-Ray
A lung mass is a larger focal lung opacity seen on imaging that often needs further evaluation.
Pulmonary Nodule on Chest X-Ray
A pulmonary nodule is a small rounded opacity in the lung seen on chest imaging.
Interstitial Opacities
Interstitial opacities are increased lung markings or diffuse reticular densities seen on chest X-ray.
Hyperinflation on Chest X-Ray
Hyperinflation means the lungs appear more expanded than usual on chest X-ray.
Hilar Enlargement
Hilar enlargement means one or both hila look more prominent than expected on chest X-ray.
Widened Mediastinum
Widened mediastinum is a chest X-ray finding in which the central chest silhouette appears broader than expected.
Rib Fracture
A rib fracture may appear as a visible cortical break or irregularity on X-ray, but nondisplaced fractures can be subtle or not clearly seen.
Heart Failure
Heart failure can produce chest X-ray findings such as cardiomegaly, vascular congestion, pulmonary edema, and pleural effusions, especially when fluid overload is present.
Fracture
Fracture is a break or structural disruption in bone that may be obvious or subtle on X-ray.
Mass
Mass is an imaging term for a larger focal lesion or opacity that needs clinical and imaging context.
Nodule
Nodule is an imaging term for a smaller focal lesion or opacity seen on a chest image.
COPD / Emphysema
COPD and emphysema are chronic lung diseases that can change chest X-ray appearance but are not diagnosed by X-ray alone.
Free Subdiaphragmatic Air
Free subdiaphragmatic air means extraluminal gas is visible beneath the diaphragm, a finding that can indicate perforated abdominal viscera and may require urgent evaluation.
Pneumomediastinum
Pneumomediastinum means free air is present in the mediastinum and may appear as linear lucency outlining the heart, great vessels, or central airways on X-ray.
Subcutaneous Emphysema
Subcutaneous emphysema means air is present in soft tissues outside the lung and may appear as streaky or bubbly lucency over the chest wall, neck, or shoulders.
Pneumoperitoneum
Pneumoperitoneum means free air in the peritoneal cavity and can be an urgent clue to perforated bowel or another abdominal emergency.
Tuberculosis
Tuberculosis is an infectious disease that can affect the lungs and create chest imaging abnormalities, but imaging alone cannot confirm it.
Pleural Thickening
Pleural thickening means the pleural lining appears abnormally thickened, scarred, or irregular on imaging.
Fibrosis
Fibrosis refers to scarring within lung tissue and may appear on chest X-ray as coarse linear opacity, reticulation, distortion, or volume loss.
Emphysema
Emphysema is a chronic lung condition that may appear on chest X-ray through hyperinflation, flattened diaphragms, increased lucency, and reduced vascular markings.
Pulmonary Vascular Congestion
Pulmonary vascular congestion means the lung vessels look more prominent than expected and can suggest elevated cardiac filling pressures or fluid overload.
Cardiac and vascular findings
These pages cover heart-size findings, vascular congestion patterns, and common aortic contour findings visible on chest X-ray.
Enlarged Heart on X-ray
An enlarged heart on X-ray usually refers to an enlarged cardiac silhouette, but projection, positioning, and other factors can affect how large it looks.
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.
Elevated Hemidiaphragm
An elevated hemidiaphragm means one side of the diaphragm appears higher than expected on chest X-ray.
Lung Mass on Chest X-Ray
A lung mass is a larger focal lung opacity seen on imaging that often needs further evaluation.
Pulmonary Nodule on Chest X-Ray
A pulmonary nodule is a small rounded opacity in the lung seen on chest imaging.
Interstitial Opacities
Interstitial opacities are increased lung markings or diffuse reticular densities seen on chest X-ray.
Hyperinflation on Chest X-Ray
Hyperinflation means the lungs appear more expanded than usual on chest X-ray.
Hilar Enlargement
Hilar enlargement means one or both hila look more prominent than expected on chest X-ray.
Widened Mediastinum
Widened mediastinum is a chest X-ray finding in which the central chest silhouette appears broader than expected.
Rib Fracture
A rib fracture may appear as a visible cortical break or irregularity on X-ray, but nondisplaced fractures can be subtle or not clearly seen.
Heart Failure
Heart failure can produce chest X-ray findings such as cardiomegaly, vascular congestion, pulmonary edema, and pleural effusions, especially when fluid overload is present.
Fracture
Fracture is a break or structural disruption in bone that may be obvious or subtle on X-ray.
Mass
Mass is an imaging term for a larger focal lesion or opacity that needs clinical and imaging context.
Nodule
Nodule is an imaging term for a smaller focal lesion or opacity seen on a chest image.
COPD / Emphysema
COPD and emphysema are chronic lung diseases that can change chest X-ray appearance but are not diagnosed by X-ray alone.
Tuberculosis
Tuberculosis is an infectious disease that can affect the lungs and create chest imaging abnormalities, but imaging alone cannot confirm it.
Pulmonary Vascular Congestion
Pulmonary vascular congestion means the lung vessels look more prominent than expected and can suggest elevated cardiac filling pressures or fluid overload.
Bronchial Wall Thickening
Bronchial wall thickening means the airways appear more visible or thick-walled than expected, which can suggest airway inflammation or chronic bronchitic change.
Pulmonary Vascular Cephalization
Pulmonary vascular cephalization means upper-lung vessels look disproportionately prominent, often suggesting elevated left-sided cardiac filling pressure.
Calcified Granuloma
A calcified granuloma is a calcified nodule that often reflects prior healed infection or old inflammatory change.
Apical Pleural Capping
Apical pleural capping means there is pleural-based opacity or thickening at the lung apex, often from chronic scarring.
Calcified Pleural Plaque
Calcified pleural plaques are dense pleural calcifications that often reflect old pleural scarring, especially from prior asbestos-related exposure.
Bronchiectasis
Bronchiectasis is chronic widening and distortion of the airways that can predispose to mucus retention and recurrent infection.
Pulmonary Bullae
Pulmonary bullae are large air-filled spaces within the lung, often related to emphysema or focal lung destruction.
Eventration of the Diaphragm
Diaphragm eventration means part or all of the diaphragm sits abnormally high because of thinning or weakness, often as a chronic finding.
Hiatal Hernia on X-Ray
A hiatal hernia means part of the stomach has moved through the diaphragm into the chest, sometimes creating a retrocardiac air-fluid level on imaging.
Old Granulomatous Disease on X-Ray
Old granulomatous disease refers to chronic calcified nodules, lung scars, or hilar nodes that often reflect prior healed infection.
Aortic Atherosclerosis on X-Ray
Aortic atherosclerosis means chronic plaque and calcific change along the aorta, sometimes visible on chest X-ray as curvilinear calcification.
Tortuous Aorta on X-Ray
A tortuous aorta means the thoracic aorta appears elongated, unfolded, or more winding than usual on chest X-ray.
Thoracic Aortic Ectasia on X-Ray
Thoracic aortic ectasia means mild diffuse enlargement of the thoracic aorta, larger than expected but not necessarily aneurysmal.
Musculoskeletal and injury findings
These pages cover fractures, shoulder findings, spinal changes, and other skeletal topics that can appear on radiographs.
Clavicle Fracture
A clavicle fracture may appear on X-ray as a cortical break, step-off, displacement, or angulation involving the collarbone.
Kyphosis
Kyphosis means an exaggerated forward curvature of the thoracic spine, which can be seen on radiographs and may reflect posture, degeneration, fracture, or structural spine disease.
Scoliosis
Scoliosis means the spine curves abnormally to the side, often with some vertebral rotation, and can be visible on chest or spine X-rays.
Osteopenia on X-Ray
Osteopenia means reduced bone density and may make bones appear relatively more lucent or less robust on X-ray.
Vertebral Compression Fracture
A vertebral compression fracture means part of a vertebral body has collapsed or lost height, often due to osteoporosis, trauma, or underlying bone disease.
Shoulder Dislocation on X-Ray
A shoulder dislocation means the humeral head is no longer in its normal alignment with the glenoid, most often after trauma.
AC Joint Separation
AC joint separation means the acromioclavicular joint alignment is disrupted, usually after trauma to the shoulder.
Shoulder Osteoarthritis on X-Ray
Shoulder osteoarthritis is degenerative joint wear that may appear on X-ray as joint-space narrowing, bone spurs, and irregular articular surfaces.
Acromioclavicular Osteoarthritis
Acromioclavicular osteoarthritis is degenerative wear of the AC joint that can appear on X-ray as joint narrowing, sclerosis, and spurring.
Healed Rib Fracture
A healed rib fracture may appear on X-ray as callus formation, cortical remodeling, or chronic rib deformity from an older injury.
Vertebral Height Loss on X-Ray
Vertebral height loss means one or more vertebral bodies appear shortened, which can reflect compression fracture, chronic deformity, or structural bone change.
Degenerative Spine Change on X-Ray
Degenerative spine change refers to common age-related wear findings such as disc-space narrowing, osteophytes, and facet or endplate degeneration.
Calcific Rotator Cuff Tendinopathy on X-Ray
Calcific rotator cuff tendinopathy means calcium has deposited near a rotator cuff tendon, often causing shoulder pain and limited motion.
Subacromial Spur on X-Ray
A subacromial spur is a bony projection under the acromion that can narrow the subacromial space and contribute to shoulder impingement symptoms.
Glenohumeral Arthritis on X-Ray
Glenohumeral arthritis is degenerative wear of the main shoulder joint and can appear on X-ray as joint-space narrowing, osteophytes, and chronic remodeling.
Devices and postoperative checks
These pages cover visible support devices, line placement checks, and common postoperative hardware or tube-position topics.
Sternotomy Wires
Sternotomy wires are metallic closure wires seen after median sternotomy, most commonly following cardiac surgery.
Prosthetic Aortic Valve on X-Ray
A prosthetic aortic valve is a postoperative cardiac device finding seen after aortic valve replacement.
Prosthetic Mitral Valve on X-Ray
A prosthetic mitral valve is a postoperative cardiac device finding seen after mitral valve replacement.
Pacemaker Lead Position on Chest X-Ray
Chest X-ray can show the presence and general course of pacemaker leads and help assess whether they follow expected positions.
Endotracheal Tube Position on X-Ray
Chest X-ray is commonly used to confirm that an endotracheal tube sits at an appropriate depth above the carina after intubation.
Tracheostomy Tube Position on X-Ray
Chest X-ray can help show the course and general position of a tracheostomy tube within the airway.
Nasogastric Tube Position on X-Ray
X-ray is commonly used to confirm that a nasogastric or enteric tube follows the esophagus and reaches the stomach.
PICC Line Position on X-Ray
Chest X-ray helps confirm the course and general tip location of a PICC line after placement.
Central Line Position on X-Ray
Chest X-ray is commonly used to assess the course and tip position of a central venous catheter after placement.
Port Catheter Position on X-Ray
Chest X-ray can show the reservoir and catheter course of an implanted venous access port and help assess tip position.
Browse all guides
Use the alphabetical library below when you want the full reference set in one place.
Acromioclavicular Osteoarthritis
Acromioclavicular osteoarthritis is degenerative wear of the AC joint that can appear on X-ray as joint narrowing, sclerosis, and spurring.
AC Joint Separation
AC joint separation means the acromioclavicular joint alignment is disrupted, usually after trauma to the shoulder.
Aortic Atherosclerosis on X-Ray
Aortic atherosclerosis means chronic plaque and calcific change along the aorta, sometimes visible on chest X-ray as curvilinear calcification.
Apical Pleural Capping
Apical pleural capping means there is pleural-based opacity or thickening at the lung apex, often from chronic scarring.
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.
Bronchial Wall Thickening
Bronchial wall thickening means the airways appear more visible or thick-walled than expected, which can suggest airway inflammation or chronic bronchitic change.
Bronchiectasis
Bronchiectasis is chronic widening and distortion of the airways that can predispose to mucus retention and recurrent infection.
Calcific Rotator Cuff Tendinopathy on X-Ray
Calcific rotator cuff tendinopathy means calcium has deposited near a rotator cuff tendon, often causing shoulder pain and limited motion.
Calcified Granuloma
A calcified granuloma is a calcified nodule that often reflects prior healed infection or old inflammatory change.
Calcified Pleural Plaque
Calcified pleural plaques are dense pleural calcifications that often reflect old pleural scarring, especially from prior asbestos-related exposure.
Cardiomegaly
Cardiomegaly is the radiographic appearance of an enlarged heart silhouette on chest X-ray, though projection and technique can affect the measurement.
Central Line Position on X-Ray
Chest X-ray is commonly used to assess the course and tip position of a central venous catheter after placement.
Clavicle Fracture
A clavicle fracture may appear on X-ray as a cortical break, step-off, displacement, or angulation involving the collarbone.
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.
Degenerative Spine Change on X-Ray
Degenerative spine change refers to common age-related wear findings such as disc-space narrowing, osteophytes, and facet or endplate degeneration.
Elevated Hemidiaphragm
An elevated hemidiaphragm means one side of the diaphragm appears higher than expected on chest X-ray.
Emphysema
Emphysema is a chronic lung condition that may appear on chest X-ray through hyperinflation, flattened diaphragms, increased lucency, and reduced vascular markings.
Endotracheal Tube Position on X-Ray
Chest X-ray is commonly used to confirm that an endotracheal tube sits at an appropriate depth above the carina after intubation.
Enlarged Heart on X-ray
An enlarged heart on X-ray usually refers to an enlarged cardiac silhouette, but projection, positioning, and other factors can affect how large it looks.
Eventration of the Diaphragm
Diaphragm eventration means part or all of the diaphragm sits abnormally high because of thinning or weakness, often as a chronic finding.
Fibrosis
Fibrosis refers to scarring within lung tissue and may appear on chest X-ray as coarse linear opacity, reticulation, distortion, or volume loss.
Flail Chest
Flail chest is a severe chest wall injury caused by multiple adjacent rib fractures that create an unstable chest segment.
Fracture
Fracture is a break or structural disruption in bone that may be obvious or subtle on X-ray.
Free Subdiaphragmatic Air
Free subdiaphragmatic air means extraluminal gas is visible beneath the diaphragm, a finding that can indicate perforated abdominal viscera and may require urgent evaluation.
Glenohumeral Arthritis on X-Ray
Glenohumeral arthritis is degenerative wear of the main shoulder joint and can appear on X-ray as joint-space narrowing, osteophytes, and chronic remodeling.
Healed Rib Fracture
A healed rib fracture may appear on X-ray as callus formation, cortical remodeling, or chronic rib deformity from an older injury.
Heart Failure
Heart failure can produce chest X-ray findings such as cardiomegaly, vascular congestion, pulmonary edema, and pleural effusions, especially when fluid overload is present.
Hemothorax
Hemothorax means blood has collected in the pleural space, often after trauma, surgery, or thoracic injury.
Hiatal Hernia on X-Ray
A hiatal hernia means part of the stomach has moved through the diaphragm into the chest, sometimes creating a retrocardiac air-fluid level on imaging.
Hilar Enlargement
Hilar enlargement means one or both hila look more prominent than expected on chest X-ray.
Hydropneumothorax
Hydropneumothorax means both air and fluid are present in the pleural space, often producing a visible air-fluid level on imaging.
Hyperinflation on Chest X-Ray
Hyperinflation means the lungs appear more expanded than usual on chest X-ray.
Infiltrate
Infiltrate is a broad chest imaging term often used for abnormal lung density, but it is not a precise diagnosis by itself.
Interstitial Opacities
Interstitial opacities are increased lung markings or diffuse reticular densities seen on chest X-ray.
Kyphosis
Kyphosis means an exaggerated forward curvature of the thoracic spine, which can be seen on radiographs and may reflect posture, degeneration, fracture, or structural spine disease.
Lucency
Lucency means an area looks darker or less dense than expected on an X-ray, but the meaning depends heavily on where it appears and the imaging context.
Lung Mass on Chest X-Ray
A lung mass is a larger focal lung opacity seen on imaging that often needs further evaluation.
Lung Opacity
Lung opacity is a broad imaging term for an area of increased density in the lung.
Mass
Mass is an imaging term for a larger focal lesion or opacity that needs clinical and imaging context.
Nasogastric Tube Position on X-Ray
X-ray is commonly used to confirm that a nasogastric or enteric tube follows the esophagus and reaches the stomach.
Nodule
Nodule is an imaging term for a smaller focal lesion or opacity seen on a chest image.
Normal vs Abnormal Chest X-ray
A normal chest X-ray usually shows relatively clear lungs, sharp pleural angles, and no major new dense abnormality, while an abnormal X-ray can show opacity, fluid, collapse, enlargement, or device-related findings.
Old Granulomatous Disease on X-Ray
Old granulomatous disease refers to chronic calcified nodules, lung scars, or hilar nodes that often reflect prior healed infection.
Osteopenia on X-Ray
Osteopenia means reduced bone density and may make bones appear relatively more lucent or less robust on X-ray.
Pacemaker Lead Position on Chest X-Ray
Chest X-ray can show the presence and general course of pacemaker leads and help assess whether they follow expected positions.
PICC Line Position on X-Ray
Chest X-ray helps confirm the course and general tip location of a PICC line after placement.
Pleural Effusion
Pleural effusion is fluid in the pleural space around the lungs and often appears on chest X-ray as blunted angles, layering fluid, or lower-lung whiteness.
Pleural Thickening
Pleural thickening means the pleural lining appears abnormally thickened, scarred, or irregular on imaging.
Pneumomediastinum
Pneumomediastinum means free air is present in the mediastinum and may appear as linear lucency outlining the heart, great vessels, or central airways on X-ray.
Pneumonia
Pneumonia is a lung infection that often creates focal or patchy air-space opacity on chest X-ray, though early or mild cases can be subtle.
Pneumoperitoneum
Pneumoperitoneum means free air in the peritoneal cavity and can be an urgent clue to perforated bowel or another abdominal emergency.
Pneumothorax
Pneumothorax means air has collected in the pleural space and may partly or fully collapse the lung.
Port Catheter Position on X-Ray
Chest X-ray can show the reservoir and catheter course of an implanted venous access port and help assess tip position.
Postoperative Free Air
Postoperative free air means air is visible after a recent operation or procedure, and whether it is expected depends on timing and symptoms.
Prosthetic Aortic Valve on X-Ray
A prosthetic aortic valve is a postoperative cardiac device finding seen after aortic valve replacement.
Prosthetic Mitral Valve on X-Ray
A prosthetic mitral valve is a postoperative cardiac device finding seen after mitral valve replacement.
Pulmonary Bullae
Pulmonary bullae are large air-filled spaces within the lung, often related to emphysema or focal lung destruction.
Pulmonary Edema
Pulmonary edema is fluid inside the lungs that often appears on chest X-ray as bilateral or central opacities, sometimes with vascular congestion or pleural effusions.
Pulmonary Nodule on Chest X-Ray
A pulmonary nodule is a small rounded opacity in the lung seen on chest imaging.
Pulmonary Vascular Cephalization
Pulmonary vascular cephalization means upper-lung vessels look disproportionately prominent, often suggesting elevated left-sided cardiac filling pressure.
Pulmonary Vascular Congestion
Pulmonary vascular congestion means the lung vessels look more prominent than expected and can suggest elevated cardiac filling pressures or fluid overload.
Rib Fracture
A rib fracture may appear as a visible cortical break or irregularity on X-ray, but nondisplaced fractures can be subtle or not clearly seen.
Scoliosis
Scoliosis means the spine curves abnormally to the side, often with some vertebral rotation, and can be visible on chest or spine X-rays.
Shoulder Dislocation on X-Ray
A shoulder dislocation means the humeral head is no longer in its normal alignment with the glenoid, most often after trauma.
Shoulder Osteoarthritis on X-Ray
Shoulder osteoarthritis is degenerative joint wear that may appear on X-ray as joint-space narrowing, bone spurs, and irregular articular surfaces.
Sternotomy Wires
Sternotomy wires are metallic closure wires seen after median sternotomy, most commonly following cardiac surgery.
Subacromial Spur on X-Ray
A subacromial spur is a bony projection under the acromion that can narrow the subacromial space and contribute to shoulder impingement symptoms.
Subcutaneous Emphysema
Subcutaneous emphysema means air is present in soft tissues outside the lung and may appear as streaky or bubbly lucency over the chest wall, neck, or shoulders.
Support Devices
Support devices on chest X-ray include lines, tubes, and implanted hardware whose position may affect safety and management.
Thoracic Aortic Ectasia on X-Ray
Thoracic aortic ectasia means mild diffuse enlargement of the thoracic aorta, larger than expected but not necessarily aneurysmal.
Tortuous Aorta on X-Ray
A tortuous aorta means the thoracic aorta appears elongated, unfolded, or more winding than usual on chest X-ray.
Tracheostomy Tube Position on X-Ray
Chest X-ray can help show the course and general position of a tracheostomy tube within the airway.
Tuberculosis
Tuberculosis is an infectious disease that can affect the lungs and create chest imaging abnormalities, but imaging alone cannot confirm it.
Vertebral Compression Fracture
A vertebral compression fracture means part of a vertebral body has collapsed or lost height, often due to osteoporosis, trauma, or underlying bone disease.
Vertebral Height Loss on X-Ray
Vertebral height loss means one or more vertebral bodies appear shortened, which can reflect compression fracture, chronic deformity, or structural bone change.
Widened Mediastinum
Widened mediastinum is a chest X-ray finding in which the central chest silhouette appears broader than expected.
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