30 results
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Reversed Halo Sign ... , Pulmonary embolism ... , Lipid pneumonia ... Reverse #Halo #Sign ... Differential #Diagnosis #pulmonary
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
Etiologies of pulmonary ... infections according ... to CT-scan patterns ... #Patterns #Pulmonary ... #Lung #Infections
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... , Cryptococcal pneumonia ... • CT: Halo sign ... Microsporidium #Lung #Infections ... #HIV #AIDS #pulmonary
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... identified, Strep pneumoniae ... (Mycoplasma pneumoniae ... Chlamydophila pneumoniae ... CXR +/- High res CT
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
Findings on Chest CT ... Reverse Halo Sign ... Halo Sign 6. ... Organizing Pneumonia ... Patterns #Lung #Pulmonary
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Edema, Hemorrhage, Pneumonia ... Hypersensitivity Pneumonia ... Honeycombing: Idiopathic Pulmonary ... HighRes #Chest #CT
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
this patient have pneumonia ... infiltrate (e.g., CXR, CT ... procalcitonin) - Pulmonary ... chest pain) and signs ... #Pneumonia #Venn
Good example of 'shred sign' in a patient with fever, cough and shortness of breath. 

This
example of 'shred sign ... on CXR/CT imaging ... eabramsMD #Shred #sign ... #photo #ultrasound ... #lung #pulmonary
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Opacities: • Infectious ... Nocardia, zoonotic infections ... rarely typical pneumonia ... differential #diagnosis #pulmonary ... CXR #clinical #CT
Periorbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Dacryoadenitis: infection of the lacrimal glands
b. Conjunctivitis: inflammation of the
hordeolums that are no longer ... infectious. ... presentation is no longer ... patient NEEDS a CT ... ophthalmology #diagnosis #signs