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Review Question - QID 212731

Granulomatosis with Polyangiitis Etiology Pathogenesis QID: 212731 (M2.OMB.19.4770)
In scope icon M 6 B
QID 212731 (Type "212731" in App Search)
A 55-year-old man presents to the emergency department with shortness of breath and a cough. The patient states that this morning he began coughing up small amounts of blood and felt short of breath. Otherwise, the patient states that he feels healthy. Past medical history is notable for repeat sinusitis, skin ulcers that have not been healing well, and the rash seen in Figure A. The patient was incarcerated in the past and recently returned from a vacation. Laboratory values are ordered as seen below.

Serum:
Na+: 139 mEq/L
Cl-: 100 mEq/L
K+: 4.3 mEq/L
HCO3-: 25 mEq/L
BUN: 33 mg/dL
Glucose: 99 mg/dL
Creatinine: 1.9 mg/dL
Ca2+: 10.2 mg/dL

Urine:
Color: Dark
Red blood cells: Present

Which of the following is most likely to be seen in this patient?
  • A
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  • A