Thoracic Radiology Flashcards
What is more sensitive to detect rib fractures, XR or CT?
CT
While it is difficult to assess fractured ribs on XR, they are often seen due to?
Hematoma at site of fracture
What ribs are most commonly fractured?
4-10
Fractured ribs are associated with?
Pneumothorax/hemothorax
What causes a spontaneous pneumothorax?
What are the risks?
What does it lead to?
1) Rupture of alveoli through visceral pleura so air leaks into cavity
2) Smoking, COPD, and Cystic fibrosis
3) Lung collapse
What is a tension pneumothorax?
What causes it?
What does it lead to?
1) Air enters thorax but cannot exit
2) Trauma where injury fails to seal
3) Lung collapse and impaired venous return which can lead to cardiac arrest
What is pulmonary meniscus sign commonly seen with?
The meniscus is due to?
Where does it accumulate in, on the PA radiograph?
Where does it accumulate in, on the lateral radiographs?
1) Pleural effusion on X-ray
2) Surface tension between two different fluids in pleural cavity
3) Costophrenic angles
4) Substernal region
What are solitary, round, circumscribes shadows on X-ray that may be calcified and may be asymptomatic?
What are some causes?
1) Coin sign
2) TB, neoplasm, cysts
What are seen when the interlobular septa in the pulmonary interstitium becomes prominent?
Kerley lines
Diagonal lines running from hila to periphery are known as?
Short parallel lines at the periphery perpendicular to pleura are known as?
1) Kerley A lines
2) Kerley B lines
The fluid buildup within pericardial cavity leading to obstruction of blood flow and a water bottle shaped heart is known as?
Cardiac Tamponade
What are the symptoms of cardiac tamponade (Beck’s triad)?
1) Distant heart sounds
2) Jugular distension
3) Hypotension
In an echocardiography, the apex is where?
Top
What causes Kerley A lines?
What causes Kerley B lines?
1) Distention of lymphatic anastomosis
2) Pulmonary edema, lymphoma, pneumonia
Mediastinal shifts found on XR is a sign of?
Tension Pneumothorax