THORACIC Section 4: INFECTION - Viral Infections Flashcards
The radiographic appearance is multiple nodules, ground glass or consolidative.
CMV
Seen in two classic scenarios:
(1) Reactivation of the latent virus after prolonged immunosuppression (post marrow transplant)
(2) Infusing of positive marrow or in other blood products. The timing for bone marrow patients is “early” between 30-90 days.
CMV
Multifocal ground glass opacities with small nodular opacities
Measles
Pneumonia can be before or after the skin lesions.
Complications higher in pregnant and immunocompromised
Measles
Coalescent lower lobe opacity. Pleural effusion is rare.
Influenza
Lower lobe predominant ground glass opacities
SARS - CoV 1
Multiple peripheral nodular opacities. They form small round calcific nodules in healed version
Varicella
Most commonly causes Chickenpox in kids. The pneumonia more commonly occurs in immunocompromised adults (with AIDS or lymphoma)
Varicella
Uncommonly affects the lung. Can cause lymph node enlargement
Ebstein Barr
Most common radiographic abnormality is a big spleen
Ebstein Barr
Describe “Severe Disease” in COVID 19
> 50% involvement on imaging within 24-48 hours.
CXR Findings of COVID -19
Bilateral, Peripheral, Lower Zone Multi-focal Opacities (NOT lobar pneumonias). Pleural effusions are uncommon.
CT Findings of Acute COVID-19
Bilateral, Peripheral (sub-pleural). Ground Glass Opacities, with bronchovascular thickening (associated with opacities) - tends to favor the lower lobes.
the term used when interlobular lines are visible/thickned
“crazy paving”
CT Findings of Late Phase COVID “Absorption Stage” (>14 days)
“Fibrous stripes” appearance in regions of previous disease.
