34 results
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
Red Blood Cell ( ... Chemotherapy (e.g ... disease, McLeod blood ... #differential #diagnosis ... #hematology #microscopy
Peripheral Blood Smear Analysis
Hypochromia
Megaloblastic Anemia
Schistocytes: Microangiopathic hemolytic anemia (e.g. DIC, TTP, HUS)
Microspherocytes: Autoimmune hemolytic anemia
Sickled red
Peripheral Blood ... (e.g. ... Microspherocytes: Autoimmune ... cells: Sickle cell ... Smear #Analysis #hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
- Differential Diagnosis ... Megakaryopoiesis • Aplastic Anemia ... methotrexate) • Drugs Autoimmune ... ITP • SLE • CLL ... Algorithm #Causes #Hematology
Blood Disorders - Markers and Differential Diagnosis Algorithm 
Acute
 • Myloid (AML) - CD13, CD33, CD34,
Blood Disorders ... and Differential Diagnosis ... Pelger-Huet, Macrocytic anemia ... • Lymphoid (CLL ... #Disorders #hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... Microangiopathic hemolytic anemia ... . lupus, CLL, lymphoma ... #differential #diagnosis ... #hematology #anemia
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
the peripheral blood ... • Hemolysis: Autoimmune ... . sickle cell anemia ... Production #Index #hematology ... #diagnosis #calculation
Anemia Diagnostic Algorithm

Mean corpuscular (cell) volume (MCV): Average RBC size. Under 80 = microcytic. Between 80-95
Anemia Diagnostic ... in peripheral blood ... High in acute blood ... of substrate (e.g ... #Workup #Hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
- Differential Diagnosis ... malignancies • Anemia ... . autoimmune, TB ... myeloid leukemia (CML ... #Causes #hematology
Peripheral blood findings in microangiopathic hemolytic anemia.  DIC is a clinical and laboratory diagnosis, not
Peripheral blood ... and laboratory diagnosis ... non-specific red cell ... count, D-dimer, egg ... #Hematology #Pathology
Causes of Anemia with Low Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased Heme Synthesis or
- Differential Diagnosis ... Causes: Chronic Blood ... HgbE, HgbC, etc. ... #Differential #Diagnosis ... Algorithm #Causes #Hematology