Extranodal lymphomas of the mucosa-associated lymphoid tissue (MALT) account for approximately 8% of all non-Hodgkin’s lymphomas and comprises up to 50% of primary gastric lymphomas, however they can arise in virtually any extranodal site.1-3 Their histologic features are similar regardless of the site of origin.4 MALT lymphoma usually arises in mucosal sites where lymphocytes are not normally ...

Background. Lymphoma of the urinary bladder (LUB) is rare. Aims. To review the literature on LUB. Methods. Various internet databases were used. Results. LUB can be either primary or secondary. The tumour has female predominance; most cases occur in middle-age women. Secondary LUB occurs in 10% to 25% of leukemias/lymphomas and in advanced-stage systemic lymphoma. Less than 100 cases have been ...

BACKGROUND Peripheral B-cell lymphoma of the marginal zone (MALT, low-grade), presenting as localized, extranodal disease, usually affects the elderly. The gastrointestinal tract is the most frequently involved extranodal location, representing 70% of all MALT lymphomas. Recently, numerous other extranodal sites involved by MALT lymphomas have also been described. PATIENTS AND METHODS From Ja...

We analyzed the configuration of the CARMA1 gene, encoding a protein that closely interacts with BCL10 and MALT1, in a series of 120 extranodal marginal zone B-cell lymphomas of MALT-type and 35 diffuse large B-cell lymphomas. Our study suggests that CARMA1 is not targeted by chromosomal translocations in these lymphoma entities.

Purpose: High-grade mucosa-associated lymphoid tissue (MALT) lymphomas of the stomach are generally believed to be Helicobacter pylori–independent, autonomously growing tumors. However, anecdotal cases of regression of high-grade lymphomas after the cure of H pylori infection had been described. The present prospective study was conducted to evaluate the effect of anti–H pylori therapy in stage...

Primary renal lymphomas are very rare since renal involvement by the disease is most often a manifestation of disseminated disease. We report an 88-year-old man with low-grade extranodal marginal zone B cell lymphoma of mucosa-associated lymphoid tissue (MALT) (MALT lymphoma) arising in the kidney. After the workup, the patient was thought to have renal cell carcinoma and underwent partial neph...

AIMS To describe the clinicopathological features of a large number of surgically treated and followed up primary gastric lymphomas and thereby gain a better understanding of their biology, with particular reference to the prognostic factors of high grade tumours. METHODS A retrospective study of 152 patients. RESULTS High grade gastric lymphomas, both pure and with a residual low grade com...

PURPOSE To report nine cases of orbital lymphomas. METHODS We reviewed the clinical records of nine patients diagnosed with orbital lymphoma and performed a literature search related to this condition. RESULTS We present a series of five women and four males with orbital lymphoma involving the orbital region. In our cases, most patients presented concurrent extraorbital lymphoma when the or...

Introduction. Primary thyroid lymphomas constitute up to 5% of all thyroid malignancies and can be divided into non-Hodgkin's lymphomas (NHLs) of B- and T-cell types, as well as Hodgkin's lymphomas. Mucosa-associated lymphoid tissue (MALT) lymphomas are a relatively recently recognized subset of B-cell NHLs, and they are listed as extranodal marginal zone lymphomas according to the revised Euro...

Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) is a distinct lymphoma with specific clinical and pathological features that occurs in diverse anatomic locations. We conducted this retrospective study to demonstrate our experience in patients with MALT lymphomas and compare our results with the literature. We studied 23 patients with histologically confirmed...