Chest week 2

Question 1

what is pneumomediastinum.

Answer 1

air within mediastinum

Question 2

what is consolidation

Answer 2

replacement of air by fluid in lungs

often has presence of air bronchogram

dense abnormal opacity seen within lung field.

often associated with pneumonia.

Question 3

radiographic appearance of atelectasis

Answer 3

mediastinal displacement, often with tracheal deviation

elevated diaphragm
crowded lungs

Question 4

what is pulmonary infarction

Answer 4

• death to lung tissue (due to in adequate blood supply)

- area closest to dead tissue will collapse (due to inadequate supply)

Question 5

what is pulmonary oedema

Answer 5

increase in fluid in extravascular tissue.

this is normally due to:

• increases capillary pressure
• head trauma/ presence of tumour

Question 6

how does pulmonary oedema present on X-ray

Answer 6

• fluid collections spreads in fan like shape begining at hilum.
• dense abnormal opacity similar to consolidation
• may have heart enlargement

Question 7

what happens when you have upper lung collapse and a lower lung collapse

Answer 7

upper lung will result in the hila and horizontal fissure elevating. tracheal deviation. hyper inflation of lower lung

lower lung collapse will result in the hila depressing