44 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... - Differential ... - Synovium - Oral ... #differential # ... diagnosis #msk #
Warm Antibody Autoimmune Hemolytic Anemia 
1) DIAGNOSE AIHA
 • Anemia: macrocytic > normocytic, ↑ reticulocytes
 •
• Blood smear: Differential ... 2) LOOK FOR a cause ... Anemia #diagnosis #management ... #treatment #rheumatology
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Diagnosis and Management ... - CRP: Usually normal ... Positive in 60-80% of cases ... life-threatening • Treatment ... #Summary #rheumatology
Myelodysplastic Syndrome (MD) - Diagnosis and Management Summary
myelo (marrow) -dys- (abnormal) -plastic (shape) = funny-shaped cells
Diagnosis and Management ... marrow) -dys- (abnormal ... old, ~10,000 new cases ... only curative treatment ... #treatment #hematology
Adult-Onset Still's Disease
Clinical triad: Fever, Arthralgia/arthritis, Skin rash ± odynophagia
+ Biological inflammation: Increased neutrophils, Hyperferritinemia, decreased
fraction < 20% Differential ... • Muscular: normal ... CK, normal biopsy ... Disease #diagnosis #management ... #treatment #rheumatology
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
excrete water normally ... Then, ask 3 questions ... approach to the differential ... #Hyponatremia #Differential ... #management #nephrology
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
Diagnosis and Management ... study (aPTT may be normal ... in mild cases) ... antigen (vWF:Ag) are normal ... #treatment #hematology
Optic Neuritis - Diagnosis and Management
 • Epidemiology: Female (75%), 18-50 years,
caucasian
 • Symptoms: Moderate visual
Diagnosis and Management ... lesions (a), Brain: normal ... corticosteroids TREATMENT ... - Typical MS-like ... #treatment #rheumatology
Focal Periphyseal Edema (FOPE lesion) - MSK Radiology
Imaging Findings:
 • Arrows identifying the characteristic edema-like signal
FOPE lesion) - MSK ... atraumatic adolescent knee ... (save $$) Differential ... The physis is normal ... Radiology #diagnosis #msk
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
CRP - Usually normal ... Discontinuation of causal ... Usual therapeutic management ... comparison #table #rheumatology ... #diagnosis #management