2A85.1 Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue of stomach

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

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.

postcoordination

synonyms

• Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue of stomach
• MALT - [mucosa associated lymphoid tissue] lymphoma

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