13 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
infectionPulmonary ... pneumothorax, bronchiectasis ... Tuberculosis Diagnosis ... Active TB: • ... #Diagnosis #Management
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
infectionPulmonary ... pneumothorax, bronchiectasis ... Tuberculosis Diagnosis ... Active TB: • ... #Diagnosis #Management
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Testing LATENT TB ... • LTBI is diagnosed ... IGRA/QuantiFERON-TB ... intermediate risk of disease ... used to exclude pulmonary
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Connective tissue diseases ... : TB, NTM, PNA ... , in advanced disease ... parenchyma Diagnosis ... #diagnosis
Hemoptysis - Differential Diagnosis Framework
Airways: 
 • Bronchitis
 • Bronchiectasis
 • Malignancy: Primary bronchogenic CA, Endobronchial
- Differential Diagnosis ... Bronchitis • Bronchiectasis ... Parenchyma: • Infection ... : TB, Paragonimus ... syndrome • Valvular Disease
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
Bronchiectasis - ... Immunodeficiency 3) Infection ... (Bacterial, TB, ... Rheumatologic/Autoimmune diseae ... #pulmonary #diagnosis
Tuberculin Skin Test Interpretation - Threshold for treatment
Induration cutoff >5mm:
 • Recent exposure to an individual
Tuberculin Skin Test ... individual with active ... TB • Abnormal ... disease • HIV ... #diagnosis #Interpretation
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
in 24h Airway disease ... • Bronchitis, Bronchiectasis ... Parenchyma: • Infection ... : Bacterial (TB, ... #pulmonary #causes
Tree-in-bud almost always indicates the presence of:
Endobronchial spread of infection (TB, MAC, any bacterial bronchopneumonia)
Airway disease
(TB, MAC, any bacterial ... associated with infection ... cystic fibrosis, bronchiectasis ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Centrilobular nodules - Bronchiectasis ... of right middle lobe ... Kansasii: • Mimics TB ... Diagnosis Of NTM ... #differential #diagnosis