Papilloma: A small solid benign tumor with a clear-cut border that projects above the surrounding tissue. A raised wart is an example of a papilloma. SLIDESHOW Rosacea, Acne, Shingles, Covid-19 Rashes: Common Adult Skin Diseases See Slideshow From Skin Problems and Treatments Resources Skin Care for PsoriasisIs Your Skin Trouble Blocked Hair Follicles?How Psoriasis Affected An Actress' Career Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19