title: Primary gastrointestinal tract mantle cell lymphoma as multiple lymphomatous polyposis.
abstract: Primary gastrointestinal involvement of mantle cell lymphoma (MCL) is rare with a frequency reported between 4 and 9% of all gastrointestinal B-cell non-Hodgkin lymphomas. It was first described and so-called as multiple lymphomatous polyposis (MLP). Its clinical presentation is usually characteristic, with multiple lymphomatous polyps involving several digestive tract segments and a marked tendency towards extra-intestinal spread. The constant and typical phenotypic features of the small cleaved tumour cells, characterised as CD20+, CD5+ CD23- with a t(11;14) (q13;q32) and cyclin D1 overexpression on immunochemistry, allow MLP to be considered as the gastrointestinal counterpart of peripheral nodal MCL. They both share a very poor outcome. Response to intensive chemotherapy regimens usually results in regression of macroscopic and sometimes microscopic lesions but remissions are short and median survival from 3 to 4 years. Prognosis has been significantly improved since in younger patients, intensive front-line immunochemotherapy with autologous stem cell transplantation has been proposed. Earlier diagnosis with further studies integrating novel agents are still required to determine the optimal treatment with less toxicity.
authors.affiliation: Department of Gastroenterology, Hôpital Saint-Antoine, Paris, France. agnes.fourmestraux@sat.aphp.fr
authors.forename: Agnes
authors.initials: A
authors.lastname: Ruskoné-Fourmestraux
authors.forename: Josée
authors.initials: J
authors.lastname: Audouin
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis / Q000401:mortality / Q000473:pathology / Q000628:therapy; D006801:Humans; D044483:Intestinal Polyposis / Q000175:diagnosis / Q000401:mortality / Q000473:pathology / Q000628:therapy; D020522:Lymphoma, Mantle-Cell / Q000175:diagnosis / Q000401:mortality / Q000473:pathology / Q000628:therapy; D033581:Stem Cell Transplantation; D014182:Transplantation, Autologous; D016896:Treatment Outcome