13 results
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 ... Algorithm #Causes #Hematology
Raynaud's Syndrome - Washing off under hot water.
Raynaud phenomenon is an exaggerated vasoconstrictive response of the
Raynaud's Syndrome ... and arterioles (e.g ... #Raynauds #Syndrome ... water #fingers #hands ... #rheumatology
Raynaud's Syndrome - Washing off under hot water wath.

Raynaud phenomenon is an exaggerated vasoconstrictive response of
Raynaud's Syndrome ... and arterioles (e.g ... #Raynauds #Syndrome ... water #fingers #hands ... #rheumatology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
(usually IgG) (e.g ... (usually IgM) (e.g ... deficiencies (e.g ... Membrane defects (e.g ... differential #diagnosis #hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
malignancies • Anemia ... inflammatory disorders (e.g ... Myelodysplastic syndrome ... Diagnosis #Causes #hematology
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
Causes of Anemia ... Increased Requirement (e.g ... • Pernicious Anemia ... Myelodysplastic Syndromes ... Algorithm #Causes #Hematology
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
La) - Sjogren's syndrome ... - Vasculitis, e.g ... - Vasculitis, e.g ... diseases #diagnosis #table ... #rheumatology #
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
underlying disease (eg ... • Infection (eg ... with leukopenia, anemia ... Diagnosis #Management #Hematology ... #Rheumatology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Non-autoimmune rheumatologic ... • Malignancy (e.g ... Endocrine disorders (e.g ... lymphopenia, low PLT • Anemia ... Erythematosus #Diagnosis #Rheumatology
Giant cell arteritis (GCA)

Giant cell arteritis (GCA) definition: Most common systemic inflammatory vasculitis in older adults
not be subtle e.g ... E.g. 80 yo ESR cutoff ... variably: On one hand ... systemic complaints- anemia ... them, but urgent rheumatology