24 results
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
, Chronic disease ... Chemotherapy (e.g ... myeloma Rouleaux: Chronic ... differential #diagnosis #hematology ... #microscopy #atlas
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Causes of Anemia ... of Chronic Disease ... of Chronic Disease ... (e.g. ... Algorithm #Causes #Hematology
Peripheral Blood Smear Analysis
Hypochromia
Megaloblastic Anemia
Schistocytes: Microangiopathic hemolytic anemia (e.g. DIC, TTP, HUS)
Microspherocytes: Autoimmune hemolytic anemia
Sickled red
Megaloblastic Anemia ... (e.g. ... cells: Sickle cell disease ... Smear #Analysis #hematology ... #microscopy #interpretation
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
- Vasculitis, e.g ... - Vasculitis, e.g ... Microscopic polyangiitis ... #diagnosis #table ... #rheumatology #
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
kidney disease, ... infiltration (e.g ... Marrow suppression (e.g ... Intrinsic RBC defects (e.g ... Production #Index #hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
(usually IgG) (e.g ... (usually IgM) (e.g ... deficiencies (e.g ... Membrane defects (e.g ... differential #diagnosis #hematology
Nail Disorders secondary to Systemic Diseases
Nail Fold Abnormality
 • SLE
 • Scleroderma
 • Dermatomyositis
Koilonychia - Spoon-shaped
Iron deficiency anemia ... halt nail growth (e.g ... discoloration) • Chronic ... • Nephrotic syndrome ... Systemic #Secondary #dermatology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
malignancies • Anemia ... hemorrhage) • Chronic ... inflammatory disorders (e.g ... Myelodysplastic syndrome ... Diagnosis #Causes #hematology
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Neoplastic / Hematologic ... • Anemia • ... Obstructive Pulmonary Disease ... • Drug Abuse (e.g ... Fatigue Syndrome
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
Increased Requirement (e.g ... • Pancreatic Disease ... Myelodysplastic Syndromes ... • Liver Disease ... Algorithm #Causes #Hematology