11 results
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
Bite Cell RBC: G6PD ... Diseases #Red #BloodCell ... #differential # ... diagnosis #hematology ... #microscopy #atlas
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
Hemolysis - Differential ... Autoimmune: Warm AIHA, Cold ... anemia, Thalassemias ... - AST ↑ - Urinalysis ... Diagnosis #hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... ) (e.g. lupus, CLL ... • Intrinsic RBC ... Extravascular #Causes #differential ... #diagnosis #hematology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Hemolytic Anemia ... Agglutination - Cold ... bartonella (oroya fever ... #Anemia #Differential ... #workup #hematology
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
 -
- Differential ... • Sickle cell ... elliptocytosis - RBC ... anemia • ... #Causes #Hematology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Diagnosis: • hemolytic ... anemiaCold ... younger pts) Differential ... Symptoms: High fevers ... #anemia #hematology
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
schistocytes, nucleated RBCs ... anemia Indirect ... count and differential ... a left shift Urinalysis ... #Workup #Hematology
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
peripheral blood leukocytes ... Neutrophil (Normal) Differential ... tachycardia or fever ... #differential # ... #WBC #CBC #hematology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Diagnosis and Workup ... practices that could ... changes), high MCV anemia ... not required in all ... #Workup #hematology
Paraproteinemias

Entities That Can Feature A Monoclonal Protein/M Component:
• MM
• WM
• MGUS
• MGCS
• MGRS
• Splenic Marginal Zone
Lymphoma (HCV) • CLL ... +Organomegaly+↑RBC ... anemia due to cold ... Paraproteinemias #Hematology ... #Diagnosis #Oncology