18 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Chorioretinitis • Diagnosis ... toxo IgG • CNS PCR ... • 80% with lung ... #Brain #differential ... #diagnosis #causes
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
immunofluorescence, PCR ... virus NODULAR LESIONS ... Patterns #Pulmonary #Lung ... ComputedTomography #Differential ... #Diagnosis #Chest
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
or air-filled lesions ... - Emphysema - Lung ... #Diagnosis #Radiology ... LowAttenuation #Differential ... #Diagram #Comparison
Appearance of Liver Lesions on Various Imaging Modalities
 • Computed Tomography (CT) - Arterial Phase, Portal
Appearance of Liver Lesions ... Computed Tomography (CT ... Ultrasound #Contrast #CT ... POCUS #radiology #differential ... #diagnosis #comparison
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
in HIV / AIDS - Differential ... Diagnosis Framework ... enhancement on CT ... CNS #Infections #differential ... opportunistic #InfectiousDiseases
Appearance of Liver Lesions on Computed Tomography (CT) - Arterial Phase, Portal Venous Phase and Delayed
Appearance of Liver Lesions ... Computed Tomography (CT ... ComputedTomography #CT ... #radiology #differential ... #diagnosis #comparison
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... seen • Chest CT ... Clindamycin in case of PCN ... stable residual lesion ... Abscess Differential
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
papulo-ulcerative lesion ... children; No evident lesion ... organism into the lungs ... Culture & GS, PCR ... management #treatment #infectiousdiseases
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
in HIV - Differential ... Diagnosis Framework ... • CT: Halo sign ... Polymorphic skin lesions ... #diagnosis #infectiousdiseases
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
failure, COPD, Lung ... CXR +/- High res CT ... sputum, PCP DFA ... HIVAIDS #workup #diagnosis ... #evaluation #differential