title: [A case of primary lymphoma of the stomach, diffuse lymphoplasmacytic type, with massive hematemesis].
abstract: A case of primary lymphoma of the stomach with massive hematemesis and melena who underwent emergency gastrectomy is reported. The patient was a 72-year-old woman. The tumor was 3.5 X 3.0 cm in size and occupied the posterior wall of the upper part of the gastric body. The surface of the tumor was covered with hematoma, and was there was a lack of gastric mucosa. Histological diagnosis of the tumor was primary gastric lymphoma, diffuse lymphoplasmacytic B-cell type, and monoclonal kappa-light chain was demonstrated by the immunohistochemical method. The bleeding source of the tumor tissues was a ruptured artery invading the tumor tissue in the submucosal layer of the stomach.
mesh_terms: D000368:Aged; D001402:B-Lymphocytes / Q000473:pathology; D005260:Female; D005743:Gastrectomy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006406:Hematoma / Q000209:etiology*; D006801:Humans; D007147:Immunoglobulin Light Chains / Q000032:analysis; D008223:Lymphoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D013274:Stomach Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery
chemical_list: D007147:Immunoglobulin Light Chains