12 results
Nontuberculous mycobacteria
Nontuberculous mycobacteria, also known as atypical mycobacteria, are all the other mycobacteria which can cause
mycobacteria which can cause ... pulmonary disease ... resembling TB. ... Clinical #Radiology #CXR ... #Mycobacteria #NTM
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Most Common Causes ... • Infection: TB ... , NTM, PNA • Primary ... Nasal polyps and signs ... #pulmonary #differential
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
Bronchiectasis - ... Infection (Bacterial, TB ... , NTM, Fungal) ... #pulmonary #diagnosis ... #differential #
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 (LTBI) Pathophysiology ... mycobacterial infection (NTM ... pneumothorax, bronchiectasis ... and Culture • CXR ... disease • Check CXR
Pott's Disease in Tuberculosis - Diagnosis and Management Summary
Epidemiology:
 - Typically from TB endemic areas
 -
extrapulmonary cases ... Clinical Signs ... years - May have signs ... decreased reflexes Pathophysiology ... tissue damage - CXR
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 (LTBI) Pathophysiology ... mycobacterial infection (NTM ... pneumothorax, bronchiectasis ... and Culture • CXR ... disease • Check CXR
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Cause Many Illnesses ... Centrilobular nodules ... - Bronchiectasis ... Kansasii: • Mimics TB ... #Infections #differential
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
pleural effusion on CXR ... inflammation tends to cause ... interstitial lung disease/pulmonary ... RheumatoidArthritis #RA #pathophysiology ... #signs #symptoms
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... Lung Abscess Pathophysiology ... westermani • Other: TB ... Lung #Abscess #pulmonary ... #differential #
Sarcoidosis - Diagnosis and Management Summary
Epidemiology
1) High incidence in Scandinavian countries (11-24 cases per 100,000 individuals
survival is 93-95% Pathophysiology ... symptoms are not caused ... e.g. incidental CXR ... Pulmonary: dyspnea ... Diagnosis #Management #Signs