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The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
shows a silhouette sign ... This was a consolidation ... caused by Sterptococcus ... #Clinical #Radiology ... #CXR #Pneumonia
Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... Nodule - Multiple Masses ... Atelectasis #Diagnosis ... #Clinical #Radiology ... #CXR #Consolidation
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
On the chest x-ray ... In the proper clinical ... of chronic consolidation ... #Clinical #Radiology ... #CXR #AirBronchogram
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
Reverse Halo Sign ... Halo Sign 6. ... Consolidation 7. ... Organizing Pneumonia ... #CTChest #diagnosis
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... - Cells - tumor ... caused by streptococcus ... #Diagnosis #Radiology ... #Pulmonary #CXR
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
sliding/barcode sign ... pleura reflection) Pneumonia ... - "Shred" sign ... #differential #diagnosis ... #signs #Lung #POCUS
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... between these chest ... Lobar pneumonia ... #Clinical #Diagnosis ... #Radiology #CXR
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
Tree in Bud Sign ... The Tree-in-Bud sign ... Bud #TreeInBud #Sign ... #diagnosis #clinical ... #radiology #ChestCT
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
can suggest the diagnosis ... feeding vessel sign ... feeding vessel sign ... #Clinical #Radiology ... #CXR #CTChest #
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... • CT: Halo sign ... dyspnea • Lobar consolidation ... factor • May cause ... #differential #diagnosis