May have displaced mucosa with pseudoinvasion of underlying muscularis propria
Common in children
May occur at any age
Not associated with carcinoma when sporadic
May cause bleeding or intussusception
Bosman FT, Carneiro F, Hruban RH, Thiese ND (Eds). WHO Classifiication of Tumors of the Digestive System, IARC, Lyon 2010
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