24 results
Causes of Neutropenia with Pancytopenia - Differential Diagnosis Algorithm
Sequestration:
 • Splenomegaly
Marrow Infiltration:
 • Hematologic and non-hematologic
Causes of Neutropenia ... • Toxins • Aplastic ... Anemia • Myelodysplasia ... Nutritional deficiency ... : • B12/folate
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
Causes of Anemia ... • Pernicious Anemia ... - Low Serum B12 ... • Pernicious Anemia ... #Macrocytic #Anemia
Overall Approach to Anemia - Differential Diagnosis Algorithm

Blood Loss
 • Acute Bleed - Normocytic / Normochromic
Overall Approach to Anemia ... • B12/Folate ... DeficiencyAplastic ... AnemiaAnemia ... Non-lmmune #Anemia
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Causes of Anemia ... Diagnosis Algorithm Low ... Poisoning • Anemia ... Marrow Failure • Anemia ... (>100 fL) • B12
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... - Differential ... Megakaryopoiesis • Aplastic ... Anemia • Toxic ... Megakaryopoiesis • B12
Aplastic Anemia - Overview

Who?
• M = F
• 3 peaks:	1) Childhood	2) 15-25 years	3) >60 years

What?
• Aplastic anemia
Aplastic Anemia ... • Aplastic anemia ... Anemia Clinical ... and petechiae Causes ... may result from low
Diagnostic Framework for Anemia (Morphological Approach - MCV)
Low MCV - <80fL - "Microcytic"
 • Iron deficiency
Framework for Anemia ... Approach - MCV) Low ... Megaloblastic: Vitamin B12 ... morphologic #mcv #differential ... #diagnosis #causes
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
approximately how ... loss), Vitamin B12 ... marrow failure: Aplastic ... anemia, Marrow ... #differential #
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Causes of Low Vitamin ... B12 Levels Low ... vitamin B12 intake ... Autoimmune - Pernicious anaemia ... #differential #
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 • Vit B12 - aka cobalamin. Present in foods derived from animal
• Common Causes ... autoantibodies (pernicious anemia ... Worsening macrocytic anemia ... wt loss • If anemia ... - CBC, PBS - anemia