3011 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Toxoplasmosis (CD4 ... CNS Lymphoma (CD4 ... • Nocardia • Parasitic ... differential #diagnosis #causes
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Disease by CD4 ... Count: Any CD4 ... Blastomycosis CD4 ... factor • May cause ... possible in HIV PARASITIC
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
hypereosinophilia (HE) Caused ... cytokines Common causes ... disease Rare causes ... CD3-CD4+ T cells ... Differential #Diagnosis #Causes
Brugia malayi - Filariasis on Microscopy

What is Brugia malayi? It is a filarial parasitic worm that
is a filarial parasitic ... worm that can cause ... The adult worms cause ... microbiology #nematodes #parasite
T-LGL leukemia - T-CeIl Large Granular Lymphocytic Leukemia
Clinical
 - Persistent (>6mo) lymphocytosis (2-20k) with proven clonality
- Positive: CD2 ... , CD3, CD8 - Loss ... of CD5 and/or CD7 ... Rarely can be CD4
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Mnemonic NO cause ... found in 60% of cases ... , Syphilis Parasitic ... Nodosum #Mnemonic #Causes
Blood Disorders - Markers and Differential Diagnosis Algorithm 
Acute
 • Myloid (AML) - CD13, CD33, CD34,
- CD13, CD33, CD34 ... - T-cell - CD7 ... , CD3 Chronic ... - B-cell CD5
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Parainfluenza • CD4 ... Mycobacterial: • CD4 ... ) Fungal: • CD4 ... Penicillium marneffei Parasitic ... : • CD4 < 200
Ellipsoid / Football shaped parasite eggs on Microscopy - Mnemonic by Size
- Come (30um) - Chlonorchis
-
Football shaped parasite ... Dibothriocephalus - Parasites ... Ellipsoid #Football #parasite
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... antibiotics as a cause ... endemic fungi - Parasitic ... Blastomycosis - Parasite ... coccidiomycosis - Parasitic