19th February 2024

A 58-year-old male presents to the acute medical unit with shortness of breath and haemoptysis

A 58-year-old male presents to the acute medical unit with shortness of breath and haemoptysis. He also had associated myalgia and malaise accompanying this. He has a 3-week history of recurrent epistaxis, rhinitis and sinusitis. He denies any episodes of wheezing associated with this. CT scan revealed multiple nodules throughout the lungs with some cavitating nodules with thickened walls. Urine dip reveals 2+ blood and proteins. His renal function showed a mild acute kidney injury.

Which of the following autoantibody is associated with the likely underlying diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.