11 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Abscess - Differential ... culture Brain: ... Scedosporium, endemic fungi ... - Non-Infectious ... #Abscess #Differential
Differential Diagnosis for Concurrent Brain and Lung Infections
 • Bacteria: Strep anginosus, Staph aureus, Klebsiella pneumoniae
Differential Diagnosis ... for Concurrent Brain ... Toxoplasmosis • Fungi ... Histoplasmosis, Blastomycosis ... @ID_fellows #Brain
Disseminated Cutaneous Blastomycosis- A fungal culture of skin tissue was negative; however, a skin biopsy showed
- A fungal culture ... skin tissue was negative ... pyogranulomatous fungal ... infection of Blastomyces ... #clinical #photo
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
fastidious bacteria or fungi ... antimicrobials, clinical ... Tropheryma whipplei, Fungi ... bacteria) and 18S ( fungi ... Endocarditis #diagnosis #differential
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... ) • Fungi: Aspergillus ... Histoplasmosis, Blastomycosis ... #Lung #Infections ... #Concurrent #Differential
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... ) • Fungi: Aspergillus ... Histoplasmosis, Blastomycosis ... #Lung #Infections ... #Concurrent #Differential
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
component of many fungi ... infection (IFI) ... cut-offs defined in clinical ... BAL GM does not differentiate ... closely related fungi
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
has five major clinical ... isavuconazole BLASTOMYCOSIS ... stain of clinical ... • Sinusitis • Brain ... #Diagnosis #Management
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
component of many fungi ... Almost always negative ... surfaces, Albumin, Infections ... in BAL does not differentiate ... closely related fungi
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
Transverse Myelitis - Clinical ... tested and if negative ... ruled out • Brain ... Myelitis #diagnosis #management ... #neurology #differential