Figure 1From: A novel de novo mutation in the serine-threonine kinase STK11 gene in a Korean patient with Peutz-Jeghers syndrome Pathologic findings of the Peutz-Jeghers polyp. The colonic polyp shows hyperplastic mucosal epithelium and arborizing pattern of smooth muscle, consistent with a hamartomatous polyp (Hematoxylin-eosin stain, 200×).Back to article page