101 results
Several artifacts can cause significant and potentially misleading alterations to measured RBC parameters: 
1. Old samples
artifacts can cause ... Old samples cause ... Dacrocytes, #Teardrops #TargetCells ... Elliptocytes #Ovalocytes #Echinocytes ... #BurrCells #Bite
Morphologic Findings in Red Blood Cells
Basophilic stippling - Small blue dots in red cells, due to
Heinz bodies (Bite ... Bite cells: sharp ... bite-like defects ... erythrocytes Echinocytes
Warm Antibody Autoimmune Hemolytic Anemia 
1) DIAGNOSE AIHA
 • Anemia: macrocytic > normocytic, ↑ reticulocytes
 •
Differential → schizocytes ... 2) LOOK FOR a cause
Schistocytes can assume a shape resembling natural or man-made objects such as arrowheads, fish, collar buttons,
In this case, arrows ... 2 burr cells (echinocytes
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
monogamous with wife, bit ... related to dog bites ... dogs & latter can cause ... gram-negative bacillus cause ... after a dog or cat bite
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
Burr Cell RBC (Echinocyte ... Bite Cell RBC: G6PD
Elevated Liver Enzymes - Differential Diagnosis Algorithm
Severe ALT > 15x ULN
 • Viral
 • Drugs/Toxins
 •
disease US — Normal Bile ... US - Dilated Bile ... Ducts • Common Bile ... Diagnosis #Algorithm #Causes
Cardiac Masses and Tumors - Differential Diagnosis by Location
Diagram illustrating the distribution and pathologic characteristics of
Cardiac Masses and ... characteristics of cardiac masses ... intracardiac attachment site ... #Cardiac #Masses
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Anemia Intrinsic Causes ... elliptocytosis Extrinsic Causes ... , spider/snake bites ... Intravascular Causes ... Differential #Diagnosis #causes
Hemolytic Anemia - Differential Diagnosis Algorithm
Hereditary:
 • Peripheral blood smear + DAT + further History
 •
further History • Bite ... Diagnosis #Algorithm #causes