“…1,2,9 The mucosal variant occurs on the lips, gingiva, oral palate, and nasal membranes. 5,9,10 Although the name implies an infectious etiology, sites of previous trauma aggravated by irritation appear to induce the inflammatory and hyperplastic reaction. 1,2,4,7 Bacterial or viral infection, as well as tumor angiogenic factors, have also been implicated.…”