1st July 2023

A 20-year-old man presents to A&E with a 3-month history of recurrent episodes of face, hand and genital swelling

A 20-year-old man presents to A&E with a 3-month history of recurrent episodes of face, hand and genital swelling. There is no known trigger and no associated rash or shortness of breath. The patient also complains of associated abdominal pain, fever and fatigue.

Which of the following investigations will most likely reveal the cause of the swelling?

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