12 results
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
CT 1. ... ARDS 3. ... Consolidation 7. ... Patterns #Lung #Pulmonary ... #CTChest #diagnosis
Diffuse consolidation
The most common cause of diffuse consolidation is pulmonary edema due to heart failure.
This is
Look for other signs ... infection, ARDS ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
CT demonstrates ... which are probably consolidations ... #Clinical #Radiology ... #CXR #CTChest # ... #SepticEmboli #Cavity
Notice that even within each lobe there is a gravity dependent difference in density.
This is only
transudate like in CHF ... capillary leak like in ARDS ... #Clinical #Radiology ... #CTChest #CHF # ... Alveolar #Pulmonary
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
pathogens - Viral ... #Radiology #differential ... #diagnosis #pulmonary ... #CXR #clinical ... #CT
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
in HIV-AIDS Bacterial ... Evaluation: Imaging (CXR ... +/- High res CT ... chest scan), CBC ... diagnosis #evaluation #differential
Hampton hump is a radiologic sign which consists of a shallow wedge-shaped opacity in the periphery
is a radiologic sign ... hump along may aid ... CT angiography. ... #photo #CXR #EmergencyMedicine ... #Cardiology #HamptonHump
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
Differential diagnosis ... reversed halo sign ... aspergillosis; AIS ... **Includes cavitary ... lesions, lobular consolidation
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Nasal polyps and signs ... Physical stigmata of cor ... centrilobular nodules, or consolidation ... CT) • Broncho-arterial ... #differential #
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
CT: Halo sign ... dyspnea • Lobar consolidation ... fever, cough and cavitary ... Infections #HIV #AIDS ... #pulmonary #differential