415 results
Identify a Positive Tuberculosis (TB) Skin Test
#Diagnosis #Tuberculosis #LatentTB #Tuberculin #SkinTest #TST #Interpretation #Induration #Thresholds #Diameters
Tuberculosis (TB ... Tuberculosis #LatentTB #Tuberculin
Tuberculin Skin Test Interpretation - Threshold for treatment
Induration cutoff >5mm:
 • Recent exposure to an individual
Tuberculin Skin ... individual with active TB ... consistent with old TB ... #Tuberculosis #Tuberculin
Tuberculin Skin Test (Positive Mantoux Test) Result, Reading and Interpretation

#Diagnosis #Tuberculosis #LatentTB #Tuberculin #SkinTest #TST #Interpretation
Tuberculin Skin ... Tuberculosis #LatentTB #Tuberculin
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
TB: Tree-in-bud ... patient with active TB ... Comparison #Table #RadiologyAssistant
Tuberculosis Skin Test Interpretation

#Diagnosis #Tuberculosis #LatentTB #Tuberculin #SkinTest #TST #Interpretation #Induration #Thresholds #Diameters #PPD
Tuberculosis #LatentTB #Tuberculin
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 ... Comparison #Table #RadiologyAssistant
Notice the cavitation especially on the right.
In the left upper lobe there is probably some traction-bronchiectasis
#Tuberculosis #TB ... TractionBronchiectasis #RadiologyAssistant
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
tuberculosis (MDR-TB ... Factors For Active TB ... : • Tuberculin ... latent Active TB ... months Latent TB
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Testing LATENT TB ... IGRA/QuantiFERON-TB ... interpreted Tuberculin ... age ACTIVE TB ... Diagnosis #Workup #TB
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Miliary TB: random ... Comparison #Table #RadiologyAssistant