Peutz-Jeghers syndrome is an autosomal dominant condition characterized by hamartomatous polyps (Peutz-Jeghers polyps) of the gastrointestinal tract and mucocutaneous freckling. The syndrome is ...

Polyps are tissue growths that most often look like small, flat bumps or tiny mushroom-like stalks. They are usually small and less than half an inch wide. Most are benign but can become cancerous.