478 results
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... : Aspiration pneumonia ... Lung Abscess Pathogens ... Lung #Abscess #pulmonary ... #differential #causes
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
Pathogens in Pneumonia ... review of the pathogens ... your grand rounds/cases ... @ID_agram #Pathogens ... #Microbiology #Causes
Epidemiologic Clues to Unusual Pathogens in Pneumonia

#Diagnosis #Pneumonia #History #Pathogens #Clues #Infections #Differential #Atypical
Epidemiologic Clues ... to Unusual Pathogens ... in Pneumonia ... #Diagnosis #Pneumonia ... #History #Pathogens
More common & convincing pneumonia mimics 

Aspiration pneumonitis, 
Pulmonary vasculitis, 
Acute eosinophilic pneummia,  
Cryptogeric organizing
common & convincing pneumonia ... pneumonitis, Pulmonary ... Acute eosinophilic pneummia ... of idiopathic pulmonary ... Emboli #Pneumonia
Characteristics of Selected Pneumonias

Streptococcus pneumoniae (pneumococcus). Gram-positive diplococci. 
Haemophilus influenzae. Pleomorphic gram-negative coccobacilli. 
Staphylococcus aureus. Plump
Streptococcus pneumoniae ... Klebsiella pneumoniae ... Mycoplasma pneumoniae ... #Pneumonia #Patterns ... #Presentation #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
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
, Cryptococcal pneumonia ... Legionella: • Nausea ... factor • May cause ... reported in 100% of cases ... Infections #HIV #AIDS #pulmonary
Radiographic patterns of pneumonia and pathogens to consider.

Cannot be entirely relied upon.  However, they can
Radiographic patterns of pneumonia ... and pathogens to ... provide useful clues ... #Pneumonia #Patterns ... #Differential #Pathogens
Causes of Cough and Hemoptysis
Acute Inflammation 
 - Laryngitis 
 - Tracheobronchitis 
 - Mycoplasma and
Causes of Cough ... Mycoplasma and Viral Pneumonias ... - Bacterial Pneumonias ... Bronchiectasis - Pulmonary ... Mitral Stenosis - Pulmonary
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
• Infectious Causes ... Non-Infectious Causes ... , Pulmonary embolism ... , Lipid pneumonia ... Differential #Diagnosis #pulmonary