Is this a benign or malignant lesion?

Kurt, a 52-year-old lawyer, presents with a growth on the back of his left ear.

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 Paul Muthiah is a GP and medical co-editor at Australian Doctor.



  1. Dorn M, Plewig G. Acanthoma fissuratum cutis. Hautarzt 1981; 32:145-8