A 24-year-old woman presents with fever and painful, swollen cervical lymph nodes. Her blood work indicates neutrophilia with a shift to the left. She most likely has
A)
a mild parasitic infection.
B)
a severe bacterial infection.
C)
a mild viral infection.
D)
a severe fungal infection.
Ans:
B
Feedback:
Fever and painful, palpable lymph nodes are nonspecific inflammatory conditions; leukocytosis is also common but is a particular hallmark of bacterial infection. Neutrophilia also indicates a bacterial infection, whereas increased levels of other leukocytes would indicate other etiologies. The shift to the left--the presence of many immature neutrophils--indicates that the infection is severe, because the demand for neutrophils exceeds the supply of mature cells.
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