15 results
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
Air Bronchogram ... Sign on Chest CT ... non-obstructive atelectasis ... #CT #Lung #Pulmonary ... #diagnosis #radiology
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
pleura reflection) Pneumonia ... cases - Dynamic air ... bronchograms (atelectasis ... #differential #diagnosis ... #signs #Lung #POCUS
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
19 Patterns of Lung ... CT 1. ... Organizing Pneumonia ... #Pulmonary #ChestCT ... #diagnosis
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... • CT: Halo sign ... lymphadenopathy, • Abdominal ... Infections #HIV #AIDS #pulmonary ... #differential #diagnosis
Comet Tail Sign on Chest CT
 • Curvilinear pleural based opacity directed towards the ipsilateral hilum
Comet Tail Sign ... on Chest CT • Curvilinear ... • DDx: Rounded atelectasis ... #CT #Lung #Pulmonary ... #diagnosis #radiology
Bibasilar Atelectasis secondary to massive ascites

Finally, large volumes of intra-abdominal fluid can lead to elevated hemi-diaphragms-->bibasilar
Bibasilar Atelectasis ... volumes of intra-abdominal ... optiflow 60% to room air ... #pulmonary #lung ... #clinical #pocus
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
Monod Sign on Chest ... CTAir surrounding ... a preexisting pulmonary ... #CT #Lung #Pulmonary ... #diagnosis #radiology
Hypoxemia / Hypoxia - Rapid Response Management Algorithm

Stridor - Upper airway pathology:
 • Anaphylaxis
 • Foreign
hemorrhage • Pus: pneumonia ... edema • Air: ... disease • Severe atelectasis ... • Lung fibrosis ... #differential #Diagnosis
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
(assumes Room Air ... , ARDS, Pneumonia ... Edema, Atelectasis ... , Obstructive Lung ... #differential #diagnosis
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
Air Crescent Sign ... on Chest CT • ... #Crescent #Sign ... #CT #Lung #Pulmonary ... #diagnosis #radiology