67 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
- Differential Diagnosis ... Sweet's Syndrome, hidradenitis ... Autoimmune: Crohn's disease ... #Differential #Diagnosis ... #InfectiousDiseases
Invasive fungal infections: Morphology, Risk Factors, Disease Characteristics, Diagnostic Tools, First-Line Treatment
Aspergillus, Mucorales, P. Jiroveci, Cryptococcus,
Risk Factors, Disease ... Characteristics, Diagnostic ... Tools, First-Line Treatment ... Fungal #Infections #InfectousDiseases ... #Diagnosis #Management
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Commonly Used Diagnostic ... ) - May be negative ... Reflects response to treatment ... Laboratory #Tests #Diagnosis ... #Workup #Table
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
fastidious gram-negative ... Culture & GS, PCR Treatment ... : • Severe Disease ... #management #treatment ... #infectiousdiseases
Legionnaire's Disease - Extrapulmonary organ involvement: CNS: Mental confusion, encephalopathic, headache. Cardiac: Relative bradycardia. GI: Loose
Legionnaire's Disease ... Cardiac: Relative ... insufficiency #Diagnosis ... #IM #InfectiousDisease
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... hemoptysis, diarrhea Diagnosis ... first line of treatment ... #microbiology #diagnosis ... #infectiousdiseases
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
intermediate risk of disease ... because false-negative ... sample = 95% • A negative ... #Workup #TB #Latent ... LatentTB #ActiveTB #InfectiousDiseases
IgG4-Related Disease
Clinical history:  Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor
4 phenotypes:
 •
IgG4-Related Disease ... • Some false negative ... with response to treatment ... IgG4 #Related #Disease ... #phenotypes #workup
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Erythematosus (SLE) - Diagnosis ... • Immunologic Workup ... pANCA anti-MPO - Negative ... life-threatening • Treatment ... Evolution: Chronic disease
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
BCNIE Diagnostic ... exists Infectious Diseases ... #Endocarditis #diagnosis ... #differential #workup ... #infectiousdiseases