302 results
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Diagnosis Definition: A ... focal rounded area ... surrounded by a ... • Infectious Causes ... Dermatomyositis, Lung
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Rapid onset of a ... Legionella: • Nausea ... factor • May cause ... : • Focal pneumonia ... Infections #HIV #AIDS #pulmonary
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... • Idiopathic pulmonary ... Acute, Chronic • Pulmonary ... #differential #pulmonary ... #causes
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
PA-film shows a ... anteriorly in the left lung ... due to a pneumonia ... caused by Sterptococcus ... #Clinical #Radiology
Causes of Interstitial Lung Disease - Differential Diagnosis Algorithm
Idiopathic Interstitial Pneumonia
 • (UIP) Usual Interstitial Pneumonia
Causes of Interstitial ... Differential Diagnosis Algorithm ... leaking out of pulmonary ... Diseases #ILD #Causes ... Differential #Diagnosis #Algorithm
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
Here is a quick ... obstruction) - Grp A ... smoking. structural lung ... MAC (structural lung ... #Microbiology #Causes
Causes of Cough and Hemoptysis
Acute Inflammation 
 - Laryngitis 
 - Tracheobronchitis 
 - Mycoplasma and
Causes of Cough ... - Bacterial Pneumonias ... Tuberculosis - Lung ... Cancer of the Lung ... #Differential #Causes
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
right hilus is in a ... is most likely a ... weight loss or long ... caused by Streptcoccus ... #Clinical #Radiology
Interstitial pneumonias
An acute reticular pattern is most frequently caused by interstitial edema due to cardiac heart
most frequently caused ... The other cause ... presented with a ... This was a PCP-infection ... #Clinical #Radiology
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... Differential Diagnosis Algorithm ... • Interstitial lung ... Malformation • Severe Pneumonia ... #Causes #Pulmonary