17 results
Differential diagnosis of TB.
Primary TB: Acute bacterial pneumonia
Secondary TB: Sarcoidosis, Silicosis, Pneumoconiosis
Endobronchial spread of TB: Bronchopneumonia,
Hypersensitivity pneumonitis Miliary ... In both miliary ... In miliary TB the ... Diagnosis #Radiology #CTChest ... #MiliaryTB #Comparison
Miliary TB
This represents a hematogenous dissemination of infection and may occur in association with either primary
Miliary TB This ... Clinical #Radiology #CTChest ... #Miliary #MiliaryTB
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Miliary TB: random ... Radiology #HRCT #CTChest
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Miliary TB: random ... TB: Tree-in-bud ... patient with active TB ... Radiology #Pulmonary #CTChest
Pulmonary Tuberculosis - Patterns of Involvement
 • Scarring, Nodules and Consolidation
    - Lobar
thickening • Miliary ... nodules representing miliary ... #Tuberculosis #TB ... #Patterns #chest
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
: • HIV • Recent ... bacteremia, and miliary ... are pulmonary • HIV ... Hematogenous spread -> Miliary ... : • HIV-infected
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
: • HIV • Recent ... bacteremia, and miliary ... are pulmonary • HIV ... Hematogenous spread -> Miliary ... : • HIV-infected
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Random: Metastases, Miliary ... Infection (TB, ... HiRes #HighRes #Chest
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Infections in HIV-AIDS ... CD4 < 200: CMV, HSV ... /- High res CT chest ... Fungal, AFB), TB
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Infections in HIV ... macrophages in HIV ... low if you have HIV ... infiltrates, mimicking TB ... Lung #Infections #HIV