13 results
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Reversed Halo Sign ... complete ring of consolidation ... Legionellosis, Tuberculosis ... Reverse #Halo #Sign ... #pulmonary
Diffuse consolidation
The most common cause of diffuse consolidation is pulmonary edema due to heart failure.
This is
Diffuse consolidation ... cause of diffuse consolidation ... Look for other signs ... #Diagnosis #Radiology ... #Pulmonary #CXR
Pott's Disease in Tuberculosis - Diagnosis and Management Summary
Epidemiology:
 - Typically from TB endemic areas
 -
cases Clinical Signs ... years - May have signs ... symptoms of active pulmonary ... decreased reflexes Pathophysiology ... tissue damage - CXR
Reverse Halo Sign
Defined as a central ground class opacity surrounded by a ring of dense consolidation
Differential
Reverse Halo Sign ... ring of dense consolidation ... Differential Diagnosis ... Aspergillosis, Tuberculosis ... Reverse #Halo #Sign
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
Differential diagnosis ... reversed halo sign ... pneumonia; PZ, pulmonary ... lesions, lobular consolidation ... #Diagnosis #Pulmonary
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
pleural effusion on CXR ... interstitial lung disease/pulmonary ... RheumatoidArthritis #RA #pathophysiology ... #signs #symptoms ... #diagnosis #ExtraArticular
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess Pathophysiology ... Blood cultures • CXR ... early disease) • CXR ... residual lesion or is clear ... Lung #Abscess #pulmonary
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Nasal polyps and signs ... Physical stigmata of cor ... centrilobular nodules, or consolidation ... parenchyma Diagnosis ... #differential #diagnosis
Sarcoidosis - Diagnosis and Management Summary
Epidemiology
1) High incidence in Scandinavian countries (11-24 cases per 100,000 individuals
survival is 93-95% Pathophysiology ... e.g. incidental CXR ... Pulmonary: dyspnea ... acute sarcoidosis Pulmonary ... #Management #Signs
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... • CT: Halo sign ... dyspnea • Lobar consolidation ... Infections #HIV #AIDS #pulmonary ... #differential #diagnosis