Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue of stomach

Definition

A low grade, indolent B-cell lymphoma, usually associated with Helicobacter pylori infection. Morphologically it is characterised by a dense mucosal atypical lymphocytic (centrocyte-like cell) infiltrate with often prominent lymphoepithelial lesions and plasmacytic differentiation. Some of gastric MALT lymphomas carry the t(11;18)(q21;q21). Such cases are resistant to Helicobacter pylori therapy.

Also indexed as

Nearby in Other specified mature B-cell neoplasms or lymphoma

• 2A85.0Nodal marginal zone lymphoma
• 2A85.2Extranodal marginal zone B-cell lymphoma, primary site skin
• 2A85.3Extranodal marginal zone B-cell lymphoma, primary site excluding stomach or skin
• 2A85.4Lymphoplasmacytic lymphoma
• 2A85.5Mantle cell lymphoma
• 2A85.6Burkitt lymphoma including Burkitt leukaemia
• 4B4YOther specified diseases of the immune system