<prompt> Mucosal melanosis and hamartomatous polyps are seen in?Peutz-Jeghers syndromeCronkhite Canada syndromeFamilial adenomatous polyposisHereditary non polyposis colonic cancer  <response>: Ref: Harrison 19th ed., P 240 Peutz-Jeghers syndrome is characterized by dark brown spots on lips, buccal mucosa, nose and around eyes. There is concomitant intestinal polyposis. The most common location of polyps is in jejunum. It is an autosomal dominant disorder with STK11 mutation. The malignant potential of polyps ranges from never to rare transformation. 