title: Mantle cell lymphoma presenting as multiple lymphomatous polyposis of the gastrointestinal tract.
authors.affiliation: Centro Hospitalar de Setúbal, Setúbal, Portugal. Electronic address: cmartins1@campus.ul.pt.
authors.forename: Cláudio
authors.initials: C
authors.lastname: Martins
authors.affiliation: Centro Hospitalar de Setúbal, Setúbal, Portugal.
authors.forename: Cristina
authors.initials: C
authors.lastname: Teixeira
authors.affiliation: Centro Hospitalar de Setúbal, Setúbal, Portugal.
authors.forename: Élia
authors.initials: É
authors.lastname: Gamito
authors.affiliation: Centro Hospitalar de Setúbal, Setúbal, Portugal.
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Oliveira