A 34-year-old man comes to the GP because of a 6-day history of chills and red urine. He has a 4-year history of chronic sinusitis and has a long history of sinus obstruction for which he has undergone many operations. Rhinoscopy shows a diminished nasal septum. CXR shows pulmonary nodularity. Which of the following is most likely seen in this patient?
c-ANCA; anti-GBM antibodies
c-ANCA; anti-MPO antibodies
c-ANCA; anti-PR3 antibodies
p-ANCA; anti-GBM antibodies
p-ANCA; anti-MPO antibodies
p-ANCA; anti-PR3 antibodies
—
Cut-to-the-chase Answer (0:53):
—
HY USMLE Answer (4:17):
