473 results
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
infections according to CT-scan ... Bacterial pneumonia - Aspergillosis ... Actinomyces - Aspergillosis ... Bacterial pneumonia - Aspergillosis ... oxtvmJe1RmlxFFJpzgymkqdNRFOw%3D%3D #CT
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
Sign on Chest CT ... invasive pulm aspergillosis ... #Halo #Sign #CT
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
Sign on Chest CT ... DDx: Invasive aspergillosis ... Crescent #Sign #CT
Allergic Bronchopulmonary Aspergillosis (ABPA)
WHAT IS IT?
Hypersensitivity response to Aspergillus fumigatus in the airways
 • Primarily affects
Bronchopulmonary Aspergillosis ... CAN YOU SEE ON CT ... Bronchopulmonary #Aspergillosis
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
CAN YOU SEE ON CT ... Bronchopulmonary Aspergillosis
Mucoid impaction
Mucus plugs or mucoid impaction can mimick the appearance of lung nodules or a mass.
Sometimes
bronchopulmonary aspergillosis ... CT demonstrated
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
kansasii, Invasive aspergillosis ... Mycetoma, Invasive Aspergillosis ... • CT: Halo sign
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
seen • Chest CT ... • Fungal: - Aspergillosis
IDSA Aspergillosis Treatment
 • Invasive pulmonary aspergillosis (IPA)
 • CNS aspergillosis
 • Cardiac Aspergillus infection
 •
IDSA Aspergillosis ... Invasive pulmonary aspergillosis ... (IPA) • CNS aspergillosis ... ID_fellows #Invasive #Aspergillosis
Pulmonary Aspergillosis
Main Culprits: Aspergillus fumigatus, Less commonly: Aspergillus flavus, Aspergillus terreus
Diagnosis: Characteristic imaging + symptoms +
Pulmonary Aspergillosis ... Acute - Invasive Aspergillosis ... Chronic Necrotizing Aspergillosis ... cavitary pulmonary aspergillosis ... fibrosing pulmonary aspergillosis