11 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... disease comes from ... On a Chest X-Ray ... #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... Smoking related diseases ... Radiology #Pulmonary #HRCT ... #ChestCT #Differential ... #Upper #Lower #RadiologyAssistant
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
failure, COPD, Lung ... +/- High res CT ... chest scan), CBC ... Infectious Diseases ... diagnosis #evaluation #differential
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Chronic Cough - Differential ... disease or CHF) ... lymadenopathy, clubbing, chest ... ) • Abnormal CXR ... refer + order CT
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Blood cultures • CXR ... ) • CXR upright ... CT Lung Abscess ... Abscess Differential ... Abscess #pulmonary #differential
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
symptomatology Differential ... anti-GBM ab, ANA, C3, C4 ... , anti-CCP • CXR ... high resolution chest ... CT • Bronchoscopy
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Miliary Pattern - Chest ... throughout the lungs ... hematogenous spread of a disease ... diagnosis #pulmonary #CXR ... #clinical #CT
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
in HIV - Differential ... Diagnosis Framework Disease ... angioinvasive disease ... • CT: Halo sign ... AIDS #pulmonary #differential
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Loss of weight • Chest ... in the adjacent lung ... Diagnosis: • HRCT ... CT) • Broncho-arterial ... Bronchiectasis #pulmonary #differential
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
infections Lungs ... Advanced HIV (CD4 ... • Dyspnea, • Chest ... Imaging, high res CT ... NTM #Infections #differential