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Al-Saleem T, Al-Mondhiry H
Immunoproliferative small intestinal disease (IPSID): a model for mature B-cell neoplasms
Blood (2005) 105:2274-2280.
A review. Immunoproliferative small intestinal disease (IPSID) was recently added to the growing list of infectious pathogen-assocd. human lymphomas. Mol. and immuno-histochem. studies demonstrated an assocn. with Campylobacter jejuni. IPSID is a variant of the B-cell lymphoma of mucosa-assocd. lymphoid tissue (MALT), which involves mainly the proximal small intestine resulting in malabsorption, diarrhea, and abdominal pain. Geog., IPSID is most prevalent in the Middle East and Africa. IPSID lymphomas reveal excessive plasma cell differentiation and produce truncated a heavy chain proteins lacking the light chains as well as the first const. domain. The corresponding mRNA lacks the variable heavy chain (VH) and the const. heavy chain 1 (CH1) sequences and contains deletions as well as insertions of unknown origin. The encoding gene sequence reveals a deletion of V region and parts of CH1 domain. Cytogenetic studies demonstrated clonal rearrangements involving predominantly the heavy and light chain genes, including t(9;14) translocation involving the PAX5 gene. Early-stage IPSID responds to antibiotics (30%-70% complete remission). Most untreated IPSID patients progress to lymphoplasmacytic and immunoblastic lymphoma invading the intestinal wall and mesenteric lymph nodes, and may metastasize to a distant organ. IPSID lymphoma shares clin., morphol., and mol. features with MALT lymphoma, lymphoplasmacytic lymphoma, and plasma cell neoplasms. [on SciFinder (R)]
Publication Date: 2005-01-01.
Last updated on Monday, May 04, 2020