leukopenia
Definition
A medical condition characterized by an abnormally low number of white blood cells (leukocytes) in the blood
Clinical context
A 34-year-old woman presents to the emergency department with fever and severe sore throat lasting 3 days. Laboratory studies reveal a white blood cell count of 2,500/μL with 15% bands. She appears toxic and has purpura on her arms and legs. Her CBC shows marked leukopenia with left shift. What is the most likely diagnosis?
Mnemonic
LEUKOPENIA = 'Low Emissions' - cells are 'leaving' the body too quickly or being 'pulled' out of circulation