11 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Culture Negative Abscess ... negative culture Brain ... : Aspergillus, Cryptococcus ... nocardia - Fungal: Cryptococcus ... Coccidiomycosis, Cryptococcus
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
histoplasmosis, cryptococcus ... Syphilis • Pyogenic Abscess ... RingEnhancing #Lesions #Brain
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Aspergillus • Cryptococcus ... inflammation and possible abscess ... suggests perivalvular abscess ... annular or aortic abscess ... Complications: Abscess
Differential Diagnosis for Concurrent Brain and Lung Infections
 • Bacteria: Strep anginosus, Staph aureus, Klebsiella pneumoniae
for Concurrent Brain ... phenomena from endocarditis ... Mucormycosis, Cryptococcus ... @ID_fellows #Brain
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... Summary Lung Abscess ... antibiotics once stable ... shows a small, stable ... Dermatitidis - Cryptococcus
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... phenomena from endocarditis ... Mucormycosis, Cryptococcus ... febrilepodcast #Brain
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... phenomena from endocarditis ... Mucormycosis, Cryptococcus ... febrilepodcast #Brain
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
from Infective Endocarditis ... valves • MRI brain ... common, Aortic root abscess ... often seen • MRI brain ... Marantic #diagnosis #table
Suspected catheter-related bloodstream infection - Management Algorithm
 • Temperature 37.8 C   • Rigors
infection - Management Algorithm ... Hemodynamically stable ... metastatic infection (endocarditis ... , epidural abscess ... infection #Management #Algorithm
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
Fluconazole CRYPTOCOCCUS ... level, presence of cryptococcal ... CSF and serum Cryptococcal ... • Sinusitis • Brain ... abscess • Disseminated