64 results
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Causes of Thrombocytosis ... Myelofibrosis Infectious ... effect following treatment ... Iron deficiency anemia ... #Thrombocytosis
Thrombocytosis - Differential Diagnosis
Platelet Count > 450
Reactive:
 • Anemia/blood loss (Fe deficiency)
 • Infection/Sepsis
 • Non-infectious
Thrombocytosis - ... Reactive: • Anemia ... deficiency) • Infection ... Sepsis • Non-infectious ... causes #Platelets #hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Causes of Thrombocytosis ... ): • Acute infection ... malignancies • Anemia ... inflammatory disorders (e.g ... Diagnosis #Causes #hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Approach to Thrombocytosis ... → Refer to hematology ... hemolysis, deficiency anemia ... Rebound effect from treatment ... : Chronic infections
Causes of Splenomegaly - Differential Diagnosis Algorithm
Infectious
 • Bacterial
 • Viral (EBV)
 • Parasitic
 • Fungal
Congestive
Diagnosis Algorithm Infectious ... • Thrombus (e.g ... Myeloproliferative disorders (eg ... vera, essential thrombocytosis ... Algorithm #Causes #Hematology
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
infiltration (e.g ... . cancer, infection ... Marrow suppression (e.g ... G6PD deficiency), Infections ... Production #Index #hematology
Aplastic Anemia - Illness Script
Signs and symptoms:
 • Recurrent infections from neutropenia
 • Mucosal bleeding from
Aplastic Anemia ... : • Recurrent infections ... Treatment: • Consider ... diagnosis #management #treatment ... #hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Microangiopathic hemolytic anemia ... Mycoplasma pneumoniae infection ... spherocytosis) • Infections ... differential #diagnosis #hematology ... #anemia
Algorithmic Approach to Anemia - Differential Diagnosis Framework by MCV

Microcytic (MCV < 80) "TAILS":
 • Thalassemia
Algorithmic Approach to Anemia ... Sideroblastic anemia ... Macroangiopathic, Infections ... aciduria, Drugs (e.g ... Differential #Diagnosis #hematology
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Causes of Anemia ... Poisoning • Anemia ... Chronic Disease (e.g ... Inflammation, Chronic Infection ... Algorithm #Causes #Hematology