11 results
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
reach the terminal alveoli ... taken up by the alveolar ... and Culture • CXR ... Tuberculosis Treatment ... • Check CXR and
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
reach the terminal alveoli ... taken up by the alveolar ... and Culture • CXR ... Tuberculosis Treatment ... • Check CXR and
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
- Imaging: • CXR ... opacities, Unilateral consolidation ... • HRCT: patchy consolidation ... legionella/strep, HIV ... Organizing Pneumonia Treatment
Tuberculin Skin Test Interpretation - Threshold for treatment
Induration cutoff >5mm:
 • Recent exposure to an individual
Threshold for treatment ... • Abnormal CXR ... consistent with old TB ... diseaseHIV ... carcinoma of head/neck/lung
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Blood cultures • CXR ... ) • CXR upright ... seen • Chest CT ... hemorrhage • Treatment ... westermani • Other: TB
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Infections in HIV-AIDS ... failure, COPD, Lung ... +/- High res CT ... Fungal, AFB), TB ... Infectious Diseases
Here a typical lobar consolidation.
First study the images, then continue reading.
The findings are:
increased density with ill-defined
borders in the left lung ... some alveoli will ... Streptococcus pneumoniae, TB ... and lung cancer ... Clinical #Radiology #CXR
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Diagnosis Framework Disease ... • CT: Halo sign ... dyspnea • Lobar consolidation ... phagocytic function of alveolar ... infiltrates, mimicking TB
Stage III - Alveolar edema
This stage is characterized by continued fluid leakage into the interstitium, which
disease, i.e. fluid ... areas of the lung ... with perihilar consolidations ... After treatment ... Clinical #Radiology #CXR
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
• Infection: TB ... centrilobular nodules, or consolidation ... high-resolution chest CT ... , CCP, ANCA • HIV ... mycobacteria Treatment