10 results
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Diagnosis Of NTM ... Imaging, high res CT ... Exclusion of other diagnosis ... #Infections #differential ... #diagnosis #infectiousdiseases
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
Pulmonary Pathology ... point (hard to ... Distress Syndrome (ARDS ... #differential # ... diagnosis #signs
Rapidly Growing Mycobacterial Infections

 • Mycobacterium abscessus - Is the most pathogenic and the most likely
likely to cause pulmonary ... with underlying lung ... #differential # ... infectiousdiseases ... #NTM
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 ... Bacterial, TB, NTM ... Bronchiectasis #pulmonary ... #diagnosis #differential
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
in HIV-AIDS Bacterial ... M.tuberculosis, NTM ... failure, COPD, Lung ... CXR +/- High res CT ... HIVAIDS #workup #diagnosis
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
throughout the lungs ... Diagnosis of Miliary ... Tuberculosis, NTB ... #diagnosis #pulmonary ... CXR #clinical #CT
AIDS-defining illnesses
 - Candidiasis of the esophagus, bronchi, trachea, or lungs [(but NOT the mouth (thrush)]
bronchi, trachea, or lungs ... tuberculosis, any site (pulmonary ... Illnesses #HIV #InfectiousDiseases ... #Diagnosis #List ... #Differential
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Infection: TB, NTM ... in the adjacent lung ... high-resolution chest CT ... #differential # ... diagnosis
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
in HIV - Differential ... • CT: Halo sign ... Infections #HIV #AIDS ... #pulmonary #differential ... #diagnosis #infectiousdiseases
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
muscle aches, joint ... yeast • At risk: AIDS ... change in the lungs ... nails, bronchi, lungs ... ) #Mycoses #InfectiousDiseases