16 results
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Platelet Disorders - Differential ... - History of bleeding ... epistaxis, gingival bleeding ... unclear, or if a primary ... #Workup #hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Causes of Thrombocytosis ... - Differential ... disorders (e.g. autoimmune ... Post-splenectomy Primary ... #hematology #secondary
Causes of Eosinophilia - Differential Diagnosis
Bugs:
 - Fungus (aspergillosis)
 - Viral (HIV)
 - Ectoparasites (scabies, myiasis)
Causes of Eosinophilia ... - Differential ... (vasculitis / autoimmune ... #Diagnosis #Causes ... #hematology
Idiopathic CD4 Lymphopenia (ICL) / Lymphocytopenia 

DIAGNOSTIC CRITERIA FOR ICL
 • Persistent CD4 T-cell lymphopenia
 •
NO underlying primary ... • Autoimmune ... ICL #diagnosis #hematology ... #Differential # ... Causes #lymphocytopenia
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Extravascular Causes ... usually IgM) (e.g. primary ... Extravascular #Causes ... #differential # ... diagnosis #hematology
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Treatment: • Treat primary ... cause • Correct ... abnormalities - PLT ... Coagulation #diagnosis #causes ... treatment #management #hematology
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
• Malignancy: Primary ... Kaposi's sarcoma • Rheumatologic ... / Autoimmune: ANCA-Assoc ... Nasopharyngeal bleeding ... Diagnosis #pulmonary #causes
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
→Activation of CD8 ... Cytopenia +++ (Plt ... assessment+++ Primary ... solid cancers • Autoimmune ... treatment #summary #rheumatology
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
-> AML: Blast crises ... Significant ↓ PLT ... count • ↓Hg & PLT ... + distinctive primary ... #Leukemia #Hematology
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
Polycythemia - Differential ... an underlying cause ... : neuro, heme (bleeding ... Better call hematology ... Algorithm #workup #hematology