19 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture Negative ... as a cause of a negative ... Sweet's Syndrome, hidradenitis ... Autoimmune: Crohn's disease ... Differential #Diagnosis #InfectiousDiseases
Legionnaire's Disease - Extrapulmonary organ involvement: CNS: Mental confusion, encephalopathic, headache. Cardiac: Relative bradycardia. GI: Loose
Legionnaire's Disease ... Cardiac: Relative ... Diagnosis #IM #InfectiousDisease ... Legionnaires #Legionella #Algorithm
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
specificity - Falsely negative ... ) - May be negative ... HLA-DQ8 - High negative ... Reflects response to treatment ... Tests #Diagnosis #Workup
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
fastidious gram-negative ... Culture & GS, PCR Treatment ... : • Severe Disease ... diagnosis #management #treatment ... #infectiousdiseases
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
• Immunologic Workup ... pANCA anti-MPO - Negative ... life-threatening • Treatment ... Evolution: Chronic disease
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 ... management #phenotypes #workup
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 ... Testing #Diagnosis #Workup ... LatentTB #ActiveTB #InfectiousDiseases
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... microbiological techniques Work-up ... exists Infectious Diseases ... #differential #workup ... #infectiousdiseases
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Differential Diagnosis Algorithm ... hematology for workup ... Rebound effect from treatment ... Vasculitides, IBD, Celiac disease ... Differential #Diagnosis #Algorithm
Septic Arthritis - Diagnosis and Management Summary
Clinical Exam: hot, swollen, pain with passive AND active ROM
necrosis, Lyme disease ... viral arthritis Workup ... arthritis diagnosis Treatment ... staphylococcus, gram negative ... patient admitted for treatment