A 74-Year-Old Man Is Hospitalized with Acute Urinary Retention Complicated

A 74-year-old man is hospitalized with acute urinary retention complicated by urosepsis.  He has a urinary catheter placed and is started on intravenous antibiotics.  The patient requires endotracheal intubation and mechanical ventilation for 24 hours but is extubated successfully on the second hospitalization day.  On the third day of hospitalization, he develops fever and right jaw pain.  Physical examination shows firm swelling of the preauricular area on the right side extending to the angle of the mandible.  Which of the following serum markers is most helpful for confirming the diagnosis?

A) Alkaline phosphatase
B) Amylase
C) Gamma-glutamyl transpeptidase
D) Lipase
E) Parathyroid hormone

Correct Answer:

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