Infections Flashcards
1
Q
Primary TB
A
- Lymadenopathy - right
- parenchymal
- pleural effusion
- miliary TB - can be both 1’ or 2’
- randome distribution (hematogenous)
2
Q
Post-primary TB
A
- Upper lobe predominance
- Cavitation
- Absence of LAD
3
Q
Most common cause of
community acquired viral pneumonia
A
- adenovirus
- RSV
- Influenza A and B
- parainfluenza
- less common
- human metapneumovirus
- CMV
- rhinovirus
- coronavirus
4
Q
CT findings of viral nodules
A
- halo appearance
- <10mm
- no cavitation
- obliterative bronchiolitis in children
5
Q
Fungal pneumonia
t2 types
A
- endemic - geographic, immune competent
- opportunistic - immune compromised
6
Q
Histoplasmosis
A
- Central and eastern NA
- Ohio
- Mississippi
- St. Lawrence River Valleys
- Images
- nodules, may calcify
- may have miliary pattern if immunosuppressed
- parenchymal conslidation
- LAD
- nodularity/beaded draining vessels*
7
Q
Calcified lymph node of histoplasmosis
A
Bull’s eye
8
Q
Cmoplications of histoplasmosis
A
- chronic histoplasmosis
- broncholiths
- mediastinal granuloma
- fibrosing mediastinitis
9
Q
North American Blastomycosis
A
- thermally dimorphic fungus
- inhalation of conidia
- Africa
- Midwest and central America
- Wisconsin
- Findings - conslidation, upper lobes, necrotizing pneumonia
- BONE involvement!
10
Q
Coccidioidomycosis
A
- Southwestern US, northern Mexico
- esp San Joaquin Valley, central Arizona
- Valley Fever Complex
- skin rash
- arthralgias
- conjunctivitis
- Lobar consolidation, or bronchopneumonia
- then coalesce into nodules!
- beading along the vein
11
Q
What doesn’t Histo have
A
NO pleural effusion
but LOTs of LAD
12
Q
Cryptococcosis
A
- Vancouver
- Even immunocompetent patients
13
Q
Most common atypical mycobacteria
A
MAC
14
Q
Classic atypical mycobacterial infection
A
- apical infection
- cavitation
- just like post-primary TB
15
Q
Non-classic infection of atypical mycobacterial infection
A
- older women
- middle lobe and lingular predominance
- nodules
- bronchiectasis
