A 53-year-old man presented with a 5-year history of an asymptomatic nodular lesion in front of his right ear. The lesion would occasionally crust, with the crust falling off later, leaving a smooth nodule. Physical examination revealed an erythematous, irregular, 12-mm-diameter nodule with an adherent scale over its anteroinferior surface (Figure 1). The patient was otherwise in good general health.
Flower O, Varma S, Leach IH. Asymptomatic Preauricular Nodule—Quiz Case. Arch Dermatol. 2005;141(5):633-638. doi:10.1001/archderm.141.5.633-c