15 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
and Culture • CXR ... Tuberculosis Treatment ... Initiating Treatment ... • Check CXR and ... Diagnosis #Management #Treatment
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
and Culture • CXR ... Tuberculosis Treatment ... Initiating Treatment ... • Check CXR and ... Diagnosis #Management #Treatment
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
sweats, chills (infection ... disease or CHF) ... ) • Abnormal CXR ... refer + order CT ... Diagnosis #Algorithm #causes
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... • Most common cause ... ) • CXR upright ... seen • Chest CT ... westermani • Other: TB
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
failure, COPD, Lung ... Evaluation: Imaging (CXR ... +/- High res CT ... Fungal, AFB), TB ... Diseases Fellows
Tuberculin Skin Test Interpretation - Threshold for treatment
Induration cutoff >5mm:
 • Recent exposure to an individual
Threshold for treatment ... • Abnormal CXR ... consistent with old TB ... disease • HIV ... carcinoma of head/neck/lung
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
CAN YOU SEE ON CT ... involving both lungs ... Immunodeficiency 3) Infection ... (Bacterial, TB, ... Rheumatologic/Autoimmune diseae
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Chronic inflammation causes ... Most Common Causes ... : TB, NTM, PNA ... high-resolution chest CT ... mycobacteria Treatment
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status NTM Cause ... infections • ... Kansasii: • Mimics TB ... Imaging, high res CT ... differential #diagnosis #infectiousdiseases
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... Diagnosis Framework Disease ... • CT: Halo sign ... infiltrates, mimicking TB ... differential #diagnosis #infectiousdiseases