Juvenile polyposis

Fig. 3.18. a Juvenile polyposis gastric polyps in a patient with peroral mucositis (Courtesy of Dr. Carlo Buonomo, Boston, MA, USA), b Gastritis/duodenitis in an 8-year-old eventually diagnosed with Crohn disease... 

These syndromes are not as common as FAPS and include Peutz-Jeghers syndrome, multiple hamartoma syndrome (Cowden disease), juvenile polyposis (Fig. 3.18a), Cronkhite-Canada syndrome and Bannayna-Riley-Ruvalcaba syndrome. 

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