23 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
These include: - Emphysema ... #Diagnosis #Radiology ... Differential #Diagram #Comparison ... TractionBronchiectasis #Cysts #Emphysema ... #SignetRing #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Centrilobular emphysema ... #Clinical #Radiology ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Centrilobular emphysema ... Clinical #Diagnosis #Radiology ... #Differential #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... #Clinical #Radiology ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
Helpful Clues for Distinguishing Upper vs. Lower GI Bleeding
Upper GI Bleed (proximal to ligament of Treitz):
Lower GI Bleeding ... Upper GI Bleed ... lavage - BUN/Cr ... Lower GI Bleed ( ... Lower #GIBleed #comparison
Unilateral pleural calcifications are usually due to:
- infection (TB)
- empyema
- hemorrhagic #Clinical #Radiology #CXR #Pleural #Plaques
infection (TB) - empyema ... hemorrhagic #Clinical #Radiology ... #CXR #Pleural # ... Calcifications #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
associated pulmonary emphysema ... Clinical #Diagnosis #Radiology ... #Cavity #Cyst #Emphysema ... #Comparison #RadiologyAssistant
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
nodules and a feeding ... something like a feeding ... #Clinical #Radiology ... #CXR #CTChest # ... SepticEmboli #Cavity #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
small airways leading ... #Clinical #Radiology ... #CXR #Pneumothorax ... Lymphangioleiomyomatosis #LAM #RadiologyAssistant
Especially in patients who had recent cardiac surgery an enlargement of the heart figure can indicate
indicate pericardial bleeding ... and pericardial bleeding ... #Clinical #Radiology ... #CTS #CXR #PostSurgical ... PericardialEffusion #RadiologyAssistant