12 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... Brain: - Streptococcal ... , Cryptococcus, ... nocardia - Fungal: Cryptococcus ... Coccidiomycosis, Cryptococcus
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
exceptions are Aspergillus ... • India ink - "Negative ... polysaccharide capsule of Cryptococcus ... detection for cryptococcal ... mucopolysaccharide capsule of Cryptococcus
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... ) • Fungi: Aspergillus ... Mucormycosis, Cryptococcus ... febrilepodcast #Brain ... Differential #Diagnosis #causes
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... ) • Fungi: Aspergillus ... Mucormycosis, Cryptococcus ... febrilepodcast #Brain ... Differential #Diagnosis #causes
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Coccidioides - Negative ... : Cryptococcus, ... Paecilomyces, Cryptococcus ... - Negative: ... decreased with: concurrent
Differential Diagnosis for Concurrent Brain and Lung Infections
 • Bacteria: Strep anginosus, Staph aureus, Klebsiella pneumoniae
Diagnosis for Concurrent ... Brain and Lung ... Mucormycosis, Cryptococcus ... @ID_fellows #Brain ... Differential #Diagnosis #causes
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
histoplasmosis, cryptococcus ... , and aspergillus ... RingEnhancing #Lesions #Brain ... differential #diagnosis #causes
Causes of Myocarditis 
1. Infectious Myocarditis
 • Bacterial - Staphylococcus, Streptococcus, Pneumococcus, Meningococcus, Gonococcus, Salmonella, Corynebacterium
Causes of Myocarditis ... ) • Fungal - Aspergillus ... Coccidioides, Cryptococcus ... Autoantigens - Infection-negative ... lymphocytic, infection-negative
Safe Living After Transplant: Respiratory hygiene / respiratory infection prevention
 • Wear a mask when around
crowded areas as able ... , barns, bird cages ... fungal spores Aspergillus ... , Histoplasma, Cryptococcus ... given risk of Aspergillus
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
• Coagulase-negative ... Tropheryma Whipplei • Aspergillus ... • Cryptococcus ... Septic Emboli Cause ... Treat underlying cause