Stalking the Diagnosis

A 58-year-old woman presented to her primary care physician after several days of dizziness, weakness, urinary frequency, fever, and dry mouth. A urinary dipstick test was positive for leukocyte esterase and nitrites, and a urine culture grew more than 105 colony-forming units Escherichia coli per milliliter. She returned for scheduled follow-up . . . Learn more about Interactive Medical Cases »