Derm Dx: Lump on the inner surface of the lower lip

An 8-year-old boy presents with a lump in his inner lower lip that has been present for several weeks.

The patient denies pain. There has been no associated fever or other symptoms. The boy is otherwise well, is up to date on all his vaccinations and takes no medications. On physical exam, a soft, non-tender, rounded papule is noted within ...