What's causing this facial swelling and ulceration?

Ken, 19 years old, attends complaining of several weeks’ history of recurrent left facial swelling over the left angle of the mandible.

Test your clinical know-how by taking the quiz below. If you select the wrong answer, have another go — you can try as many times as you like!


Dr Jacinta Vu is an oral medicine specialist, consultant at Perth Children’s Hospital and clinical senior lecturer at the University of WA Dental School, who practises in Perth, WA.