The concept of marginal zone B-cell lymphomas was developed in the 1990s for lymphomas whose cells originate from B lymphocytes normally present in a distinct anatomical location, the so-called ‘marginal zone’ (MZ). MZ has been described in the lymphoid organs—spleen and lymph nodes—and in nonlymphoid organs—mucosa-associated lymphoid tissue (MALT) or non-mucosal tissue such as skin, orbit and ...

BACKGROUND Extranodal marginal zone lymphoma (MZL), also called mucosa-associated lymphoid tissue (MALT) lymphoma accounts for 7-8 % of non-Hodgkin lymphomas (NHLs) and most commonly involves the stomach. However, muscle involvement is very rare. CASE DESCRIPTION A 57-year-old woman was referred to our orthopaedics and traumatology clinic with a painful lump in the left arm. Physical examinat...

Various cell groups participate in the immune response and the lymphocytes constitute a large proportion of these. Lymphocytes are derived from bone marrow stem cells which differentiate in the bone marrow or the thymus gland to form two major sub-groups, B (bone marrow derived) cells which are precursors of antibody forming cells and T (thymus derived) cells required for cell mediated immunity...

BACKGROUND Gastric carcinoma and primary gastric lymphoma (PGL) are the two most common malignancies in stomach. The purpose of this study was to screen and validate a biomarker of (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) for distinguishing advanced gastric carcinoma (AGC) from PGL for clinical applications. METHODOLOGY/PRINCIPAL FINDINGS We...

Development of mucosal immunity and tolerance requires coordinated expression of a number of genes within the mucosa-associated lymphoid tissue (MALT). To study the roles of these genes in the MALT, we have established a MALT-specific gene transfer model using replication-defective adenovirus as vector. In this model, the target gene of interest is directly delivered into the Peyer's patch by i...

Mucosa-associated lymphoid tissue (MALT) lymphoma is a common low grade B-cell lymphoma arising from a background of chronic inflammatory disease at a number of mucosal sites. Those originating in the stomach are causatively linked to Helicobacter pylori infection and eradication of the bacterium with antibiotics leads to long-term complete regression of the lymphoma in aproximately 70% of case...

PURPOSE The aim of this 10-year retrospective study was to investigate prognostic clinical and laboratory factors significant for the outcome of patients with mucosa associated lymphoid tissue (MALT) lymphoma. METHODS The study involved 87 patients diagnosed with MALT lymphoma: 37 (42.5%) with gastrointestinal (GI) and 50 (57.5%) with non-GI localization. The following pretreatment laboratory...

Malignant lymphoma rarely occurs in the larynx and hypopharynx. Few cases of malignant were reported Korea. However, hypopharynx had been not A 68-year-old woman came to outpatient clinic with a foreign body sensation her throat. round, smooth margin, bright pink-colored mass was confirmed by laryngoscopy. The patient took neck computer tomography. small bulging mucosa observed, but there no pe...

In February 2002, a 42-year-old woman developed ocular adnexal extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT), MALT lymphoma, in the bilateral orbits involving lacrimal glands. She underwent 30 Gy external beam irradiation to the orbital lesions on both sides. She was well until November 2008 when she developed abdominal lymphadenopathy and transabdominal e...

The bone marrow constitutes a favorable environment for long-lived antibody-secreting plasma cells, providing blood-circulating antibody. Plasma cells are also present in mucosa-associated lymphoid tissue (MALT) to mediate local frontline immunity, but how plasma cell survival there is regulated is not known. Here we report that a proliferation-inducing ligand (APRIL) promoted survival of human...