obsolete_Gastric Mucosa-Associated Lymphoid Tissue Lymphoma true gastric MALToma stomach MALT lymphoma EFO:1000274 gastric mucosa-associated lymphoid tissue lymphoma gastric MALT lymphoma 3.88.0 http://purl.obolibrary.org/obo/MONDO_0006226 MALToma of the stomach MALToma of stomach NCIT:C5266 MALT lymphoma of the stomach UMLS:C1333782 primary MALT lymphoma of stomach Replaced by Mondo term MONDO_0006226, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0006226 primary gastric MALT lymphoma primary gastric B-cell MALT lymphoma primary MALT lymphoma of the stomach A low grade, indolent B-cell lymphoma, usually associated with Helicobacter pylori infection. Morphologically it is characterized by a dense mucosal atypical lymphocytic (centrocyte-like cell) infiltrate with often prominent lymphoepithelial lesions and plasmacytic differentiation. Approximately 40% of gastric MALT lymphomas carry the t(11;18)(q21;q21). Such cases are resistant to Helicobacter pylori therapy. MALT lymphoma of stomach