68 results
Feeding Vessel Sign on Chest CT
 • Distinct pulmonary vessel leading into a lung nodule or
Feeding Vessel Sign ... on Chest CT • ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
Halo Sign on Chest ... CT • SPN or mass ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
infiltrate (e.g., CXR ... , CT, ultrasound ... Inflammation (e.g., fever ... symptoms (e.g., ... pain) and signs
Lung Abscess
Microbiology:
 • Polymicrobial 
 • Anaerobes (most common) 
Clinical: 
 • Indolent symptoms that evolve
Lung Abscess Microbiology ... • Indolent symptoms ... to rnonths • Fever ... Abscess #Diagnosis #Pulmonary ... #Clinical #CXR
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
CT demonstrates ... feeding vessel sign ... #Clinical #Radiology ... #CXR #CTChest # ... SepticEmboli #Cavity #RadiologyAssistant
Based on the images alone, it is usually not possible to determine the cause of the
with cough and fever ... with low oxygen level ... nodular interstitial lung ... #Radiology #CXR ... Consolidation #Causes #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
the air-fluid level ... airways leading to pulmonary ... #Clinical #Radiology ... #CXR #Pneumothorax ... Lymphangioleiomyomatosis #LAM #RadiologyAssistant
Lung infarction
In pulmonar embolism it is not common to see consolidation.
The consolidation is a result of
Lung infarction ... On the CT we can ... #Clinical #Radiology ... #CXR #CTChest # ... PulmonaryEmbolism #RadiologyAssistant
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
CT: Halo sign ... • Fever, weight ... Constitutional symptoms ... (fever, weight ... Infections #HIV #AIDS #pulmonary
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
Monod Sign on Chest ... CT • Air surrounding ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical