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Autoimmune Hemolytic Anemia (AIHA) - Differential Diagnosis Table

Warm AIHA (48-70%)
Cold AHA (16-32%)
 • Donath-Landsteiner HA (paroxysmal
Autoimmune Hemolytic ... Table Warm AIHA ... (48-70%) Cold AHA ... Cold Agglutinin Disease ... #Table #hematology
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
their Disease Associations ... ANA - Non-specific ... common in SLE, autoimmune ... #diseases #diagnosis ... #table #rheumatology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... (AIHA) "Warm" ( ... (AIHA)"Cold" (usually ... , Copper and lead ... #hematology #anemia
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
clinical associations ... Autoimmune diseases ... Cold #Urticaria #diagnosis ... #rheumatology # ... comparison #table
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
Autoantibodies in Rheumatology ... • Lupus (SLE): ANA ... , Others: SRP, Mi ... #diagnosis #associations ... #table
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Chain deposition disease ... Atypical HUS, autoimmune ... atheroembolic, AIHA ... Ann Marie Kumfer ... CHAMPS #Mnemonic #diagnosis
Chronic Lymphocytic Leukemia (CLL) - Summary
Overview: 
 • Most common leukemia in adults
 • Disorder of
minimal tumor burden Diagnosis ... cytopenias (ITP, AIHA ... chemotherapy for low-risk disease ... lymphadenopathy and ... #hemeonc #diagnosis
Antinuclear antibodies and Systemic lupus
Anti-dsDNA	60-80%	Association with disease activity (when with Farr assay) and lupus nephritis. Can
with disease activity ... searched for when ANA ... erythematosus #diagnosis ... #rheumatology # ... table #ANA
Multiple Myeloma and Monoclonal Gammopathies
C - HyperCalcemia- calcium > 11 mg/dL / >1 mg/dL the ULN
R
ULN R - Renal disease ... focal lesions on MRI ... autoimmune diseases ... Gammopathies #MGUS #diagnosis ... #hematology #oncology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
women • 15% of AIHA ... Viral infection, autoimmune ... CLL (older) • Autoimmune ... hemolytic #anemia #hematology ... #diagnosis