A 50-year-old white man presented with a 1-month history of an asymptomatic 1.3-cm brown-yellow crusted nodule on the right side of his lower lip (Figure 1). He reported trauma to the area from recent dental work. An incisional biopsy of the nodule was performed (Figure 2 and Figure 3).
Matthys BM, Somach SC. A Crusted Lip Nodule in a 50-Year-Old Man. Arch Dermatol. 2001;137(6):815-820. doi: