13 results
Cavitary Lung Disease - Differential Diagnosis and Workup Algorithm
Acute / Subacute:
 • Acute Infections: Lung abscess,
- Differential ... Pneumonia, Septic Emboli ... : TB, NTB, Fungal ... Algorithm #lesion #pulmonary ... #differential
Lung Nodules - Differential Diagnosis by Distribution
 • Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis,
Lung Nodules - Differential ... Pneumoconiosis, Infectious ... (viral, TB, fungal ... ), Septic emboli ... #Distribution #pulmonary
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
cancer • Septic emboli ... • Lung abscess ... characteristic features Clinical ... and Culture • CXR ... disease • Check CXR
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... CD4 > 200: Pulm embolism ... failure, COPD, Lung ... Evaluation: Imaging (CXR ... Fungal, AFB), TB
CAVITY – a useful mnemonic for the causes of a cavitating lung mass.

C = cancer
of a cavitating lung ... embolus I = infection ... (TB, fungal, staph ... Cavitary #Lesions #Differential ... #Lung #Pulmonary
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
cancer • Septic emboli ... • Lung abscess ... characteristic features Clinical ... and Culture • CXR ... disease • Check CXR
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
throughout the lungs ... Opacities: • Infectious ... Nocardia, zoonotic infections ... #diagnosis #pulmonary ... #CXR #clinical
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Infectious: • Pre-existing ... verrucous) • Lung ... Cerebral > Splenic, pulmonary ... Marantic (NTBE) Differential ... via ASD • Metastatic
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... Lung Abscess - Clinical ... westermani • Other: TB ... #Abscess #pulmonary ... #differential #
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
: TB, NTM, PNA ... Physical stigmata of cor ... in the adjacent lung ... of the affected lung ... #differential #