THORACIC Section 4: INFECTION - Septic Emboli

Question 1

Diagnosis?

Descibe the lesions

Answer 1

Septic Emboli - Multiple round opacities, one with cavitation

Question 2

Nodule with a big vessel going into it can be shown (also seen with hematogenous mets).

Answer 2

Feeding vessel sign

Question 3

Complication of Septic Emboli

Answer 3

Empyema and pneumothorax

Question 4

This is an eponym referring to jugular vein thrombosis with septic emboli classically seen after an oropharyngeal infection or recent ENT surgery.

Answer 4

Lemierre Syndrome

Question 5

Q: What is the bacterial agent responsible in the majority of cases?

Answer 5

A:“Fusobacterium Necrophorum.”

Question 6

Complete this mnemonic for Lung Cavity

C -
A -
V -
I -
T -
Y -

Answer 6

C ancer (usually squamous cell)

A uto-immune (Wegeners, Rheumatoid / Caplan
Syndrome)

V ascular - Septic Emboli / Bland Emboli

I nfection - TB

T rauma - Pneumatoceles

Y oung - “Congenital” - CCAMs, Sequestrations