15 results
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
function test, ANA (e.g ... (CVID, WAS), (neurologic ... changes), high MCV anemia ... or if a primary hematologic ... #Workup #hematology
Causes of Bleeding / Bruising - Differential Diagnosis Algorithm
Thrombocytopenia - Quantitative Defect
 • Decreased Production
 •
Causes of Bleeding ... Sequestration Disordered ... Rare • Drugs (e.g ... Connective Tissue Disorders ... #Hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Megakaryopoiesis • Aplastic Anemia ... Toxic Damage (e.g ... Displacement (e.g ... Foreign Surface (e.g ... #Hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Causes of Thrombocytosis ... malignancies • Anemia ... Chronic inflammatory disorders ... (e.g. autoimmune ... #hematology #secondary
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
(usually IgG) (e.g ... (usually IgM) (e.g ... lymphoproliferative disorders ... deficiencies (e.g ... differential #diagnosis #hematology
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
Causes of Anemia ... Increased Requirement (e.g ... • Small Bowel Disorder ... Diagnosis #Algorithm #Causes ... #Hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
, or other causes ... - Hemolytic anemia ... Retiform purpura - Protein ... Ig A vasculitis/HSP ... Differential #Diagnosis #hematology
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Neoplastic / Hematologic ... • Anemia • ... Pulmonary Disease Neurologic ... • Drug Abuse (e.g ... • Somatization Disorder
Indications for Serum Protein Electrophoresis (SPEP)
 • Suspected multiple myeloma, Waldenström's macroglobulinemia, primary amyloidosis, or related
Indications for Serum Protein ... amyloidosis, or related disorder ... • New-onset anemia ... possible malignancy (e.g ... Electrophoresis #SPEP #Hematology
Causes of Neutropenia - Differential Diagnosis
Neonate:
 - Infection - by far the most common cause
 -
Causes of Neutropenia ... the most common cause ... , eg, cyclic neutropenia ... Megaloblastic anemia-rare ... #hematology