A 13-year-old boy presents with asymptomatic lesions involving the mucosal aspects of his upper and lower lips. The lesions have been increasing in size and number over the past 5 months. He is not sexually active, is not taking any medications, and does not have a family history of a similar condition. Skin examination reveals multiple soft, mucosa-coloured papules, 2 to 8 mm in length, some w...
