21 results
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... RBC's secondary to platelet ... Thrombocytopenia • Platelet ... DIC/TTP/HUS - Hemolytic ... Vasculopathy #Purpura #Differential
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
- Differential ... with or without platelet ... Consider RBC membrane disorder ... #Anemia #Differential ... Algorithm #workup #hematology
Platelet disorders and Aggregometry
Glanzmann Thrombasthenia
 • Defective aggregation to all agonists except ristocetin
 • Normal platelet,
Platelet disorders ... 1 or Type 3) — differentiate ... Von Willebrand Disease ... #disorders #hematology ... #hemepath #differential
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
cold agglutin disease ... lymphoproliferative disorders ... e.g. sickle cell disease ... Extravascular #Causes #differential ... #diagnosis #hematology
Causes of Bleeding / Bruising - Differential Diagnosis Algorithm
Thrombocytopenia - Quantitative Defect
 • Decreased Production
 •
Bleeding / Bruising - Differential ... Sequestration Disordered ... Platelet Function ... Connective Tissue Disorders ... Algorithm #Causes #Hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Thrombocytosis - Elevated Platelet ... Count - Differential ... blood loss, Acute hemolysis ... Vasculitides, IBD, Celiac disease ... #Differential #
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Disorders - Differential ... PT, aPTT(liver disease ... bypass), LFT (liver disease ... #Disorders #Differential ... Causes #Workup #hematology
Causes of Splenomegaly - Differential Diagnosis Algorithm
Infectious
 • Bacterial
 • Viral (EBV)
 • Parasitic
 • Fungal
Congestive
Splenomegaly - Differential ... Myeloproliferative disorders ... Serum Sickness Hemolytic ... Spleen #Enlarged #Differential ... Algorithm #Causes #Hematology
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
Microangiopathic Hemolytic ... Unstable hemoglobin disorders ... Cold autoimmune hemolytic ... RBC #Morphology #differential ... #diagnosis #hematology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
lymphoproliferative disorder ... infection, autoimmune disorder ... younger pts) Differential ... Monoclonal IgM Includes Disorders ... #hematology #diagnosis