Laboratory test results include normal chemistries, a negative anti-nuclear antibody (ANA) test, and a normal complete blood count other than a leukocyte count of 13.8 10. ... Lupus is also associated with nonerosive joint pain and interstitial lung
Blood cultures are pending. Stool occult blood test is positive. Which of the following is the most likely diagnosis?
A 27-year-old woman is evaluated for a 6-month history of fatigue, arthralgia, and myalgia. She has a history of urinary tract infections. Medications are an oral contraceptive pill and as-needed naproxen for pain. Following a physical exam, lab
Stool studies for enteric pathogens may identify a precipitant of toxic megacolon but require a minimum of 24 hours before test results are received.
A vesicular rash is shown. Which of the following is the most appropriate test to perform next? ... This test combines an immunoassay for HIV antibody with a test for HIV p24 antigen.
A radiograph of the hand is shown. Which of the following is the most appropriate diagnostic test to perform next? ... Measurement of transferrin saturation is the most appropriate diagnostic test to perform next in this patient.
A 47-year-old man is evaluated for a skin eruption. Approximately 2 weeks ago, his wife noted an erythematous macule on his back. Over the ensuing week, the site became progressively larger. He notes mild fatigue but no fevers. He recently returned
A 72-year-old man is evaluated for a 1-year history of progressively impaired gait and balance. He reports that he walks more slowly and is not as agile as he used to be, attributing a recently increased number of falls to not paying enough
A 65-year-old man is evaluated because of painless neck swelling and difficulty swallowing that has progressively worsened over the last year. He does not have hoarseness, but he feels as though his voice is not as strong as it was in the past.
A 64-year-old man is evaluated for a new right-sided headache that began 1 day ago. He awoke yesterday with a dull ache over his right forehead that has gradually increased in intensity. He also notes some right eye discomfort, sensitivity to light,