?:definition
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A clinico-pathological entity reflecting the multiple polyps throughout the gastrointestinal tract created as a result of involvement by a non-Hodgkin lymphoma. Typically, mantle cell lymphomas involving the gastrointestinal tract give rise to multifocal lymphomatous polyposis. Importantly, other histologic subtypes of non-Hodgkin lymphoma can also produce this clinico-pathological entity. (WHO, 2000)
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