9 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
Droplets that contain bacilli ... affecting the lungs ... Active TB: • ... TB - Only latent ... Active TB: •
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
Droplets that contain bacilli ... affecting the lungs ... Active TB: • ... TB - Only latent ... Active TB: •
Cavitary Lesion with Air-Fluid Level on Chest XRay

70+ year old man with PMH of latent TB
Cavitary Lesion ... Air-Fluid Level on Chest ... man with PMH of latent ... TB s/p treatment ... and pleuritic chest
Notice the cavitation especially on the right.
In the left upper lobe there is probably some traction-bronchiectasis
Radiology #Pulmonary #CTChest ... #Tuberculosis #TB ... #Active #SecondaryTB ... #Cavitary #TractionBronchiectasis
TB
This patient presented first with the CXR on the left.
The findings are:
Widespread ill-defined densities, which are
Cavity in the right ... reactivation of a latent ... TB. ... #Active #SecondaryTB ... #Cavitary #RadiologyAssistant
Primairy TB is usually clinically silent.
In 5% of infected individuals the immunity is inadequate and clinically
Primairy TB is usually ... and clinically active ... reactivation of the latent ... with cavitaty formation ... #Cavitary #SecondaryTB
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
• Nodular or cavitary ... Kansasii: • Mimics TB ... with: Cavitary ... lung disease ... • Dyspnea, • Chest
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... • Pleuritic chest ... Pneumonia: • Chest ... fever, cough and cavitary ... infiltrates, mimicking TB
Cavitation - Pneumonia
In virulent pyogenic infections an abscess may form within the consolidated lung as a
the consolidated lung ... coughed up, a cavity ... be seen on the chest ... infection like TB ... Radiology #CXR #CTChest