Imaging of Pulmonary Infection

Question 1

Lobar

Answer 1

Strep Pneumo or Klebsiella

Heals without sequela

Question 2

Round

Answer 2

Form of lobar

Think children

Klebsiella

Bulging fissure

Question 3

Bronchopneumonia

Answer 3

S aureus or G-

Scarring after healing

Question 4

Aspiration broncho

Answer 4

Bilateral medial lower lobe but R>L

Can become necrotic

At risk population

Anaerobics

Question 5

Cancer

Answer 5

Persistent despite tx

Question 6

Infectious nodules

Answer 6

Will get smaller with tx and have a halo around them

Question 7

Abscess

Answer 7

Thick walled cavity

Mixed anaerobic>Aureus>pseudomonas

Question 8

Septic emboli

Answer 8

Hematogenous spread of infection

IVDU +/- bacterial tricuspid valve endocarditis

S.aureus and epidermis

Question 9

Empyema

Answer 9

Purulent in pleural space

Split pleural sign and loculated

Question 10

Granulomatous

Answer 10

Look for calcified nodules

Histo and TB

Question 11

Primar yTB findings

Answer 11

R>L consolidation

LAD with possible atelectasis

Question 12

Primary progressive TB

Answer 12

Consolidation progresses

Post UL anbd Sup LL

Question 13

Post pirimary

Answer 13

Latent TB in the lungs reactivates and spreads locally

Apical post UL and sup LL

No effusion or LAD

Tree in bud opacities

Question 14

CD>200 and under 200

Answer 14

Over - typical post primary findings

UNder - resembles primary infection with consolidation and LAD