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 urine pregnancy test is negative. Samples are obtained for nucleic acid amplification testing for Neisseria gonorrhoeae and Chlamydia trachomatis.
A 48-year-old woman is evaluated for a 2-month history of increased dyspnea, wheezing, and nonproductive cough. She also reports intermittent pain and swelling in the wrists and knees for the past 6 months. She was diagnosed with scleritis of the
A 31-year-old woman is evaluated for a 5-day history of a nonpainful cutaneous lesion on the back of her left hand. She works as a packer in a parcel distribution center. She does not recall injury to this area and reports no unusual employment or
A 55-year-old woman is seen during a follow-up evaluation for hyperthyroidism that was diagnosed 1 week ago. Thyroid examination revealed a palpable right thyroid nodule. Following a physical exam and a thyroid scan, what is the most appropriate
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
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 68-year-old man is evaluated in the emergency department for a 5-day history of an asymptomatic rash on the upper back and upper arms. The lesions grew suddenly and are neither pruritic nor painful. The patient has had associated fevers. He has a
The left panel of this angiography shows thrombosis of the right carotid artery such as might occur in a patient who presents to the emergency department with an acute symptomatic ischemic stroke. The right panel demonstrates the return of vascular
Mammogram, Pap test, and colonoscopy, all performed within the last year, were normal. ... an inadequate screening and diagnostic test.