106 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... - Differential Diagnosis ... antibiotics as a cause ... Autoimmune: Crohn's disease ... #InfectiousDiseases
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Toxoplasmosis (CD4 ... Chorioretinitis • Diagnosis ... • Nocardia • Parasitic ... #differential #diagnosis ... #causes #radiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
food, salad bar Clinical ... CNS infection Diagnosis ... Monocytogenes #diagnosis ... #management #infectiousdiseases ... #treatment #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
food, salad bar Clinical ... CNS infection Diagnosis ... Monocytogenes #diagnosis ... #management #infectiousdiseases ... #treatment #microbiology
Hantavirus
Pathogen: Hantavirus - Rodents are the primary reservoir
Transmission:
 • Shed in the urine, feces, saliva of
+/- diarrhea Diagnosis ... #Hantavirus #diagnosis ... #management #treatment ... #microbiology # ... infectiousdiseases
Leptospirosis
Pathogen: Leptospira (interrogans, kirschneri, noguchii)
Risk Factors:
 • Occupational exposure - Farmers, ranchers, trappers, veterinarians
 • Recreational
non-productive cough, nausea ... ARDS Diagnosis ... Epidemiologic exposure + clinical ... Leptospirosis #Leptospira #microbiology ... #management
Cyclosporiasis - Diagnosis and Management Summary
Pathogen: 
 • Cyclospora cayetanensis
 • Foodborne, waterbone, and soil-transmitted.
 •
and Management ... intracellular parasite ... routine O&P • Clinical ... #microbiology # ... infectiousdiseases
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... Lung Abscess - Clinical ... : • CBC - Leukocytosis ... Coccidioides • Parasite ... #differential #causes
Visceral Leishmaniasis - Diagnosis and Management Summary
Species: Leishmania donovani, Leishmania infantum, Leishmania chagasi
Where: South Asia, East
and Management ... antigen-specific CD4 ... Weight Loss • Can cause ... #infectiousdiseases ... #microbiology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
→Activation of CD8 ... accumulation of clinical ... salmonella, ...), Parasites ... Drugs, Unknown cause ... #management #treatment