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  • Title: [Two cases of stomach primary diffuse large B cell lymphoma remitted by Helicobacter pylori eradication therapy].
    Author: Miyamoto S, Okamoto R, Maeda Y, Hishima T, Sasaki T.
    Journal: Gan To Kagaku Ryoho; 2008 Dec; 35(13):2437-40. PubMed ID: 19098419.
    Abstract:
    CASE 1: The patient was a 71-year-old woman who came to our hospital for epigastric checkup. Upper gastrointestinal endoscopy showed an ulcerative lesion. Because Helicobacter pylori was positive, eradication therapy was given. As a result of biopsy, a diagnosis of diffuse large B cell lymphoma was made and she was introduced to our department. The lesion showed improvement with upper gastrointestinal endoscopy after eradication therapy, and no lymphoma cells were confirmed. She has been doing well without a recurrence. CASE 2: The patient was a 49-year-old man who had an anomaly noted with upper gastrointestinal endoscope. Then he was introduced to our hospital. Helicobacter pylori eradication therapy was performed because MALT lymphoma was suspected by a previous hospital. The only evidence of chronic gastritis was revealed with upper gastrointestinal endoscope at our hospital, but no lymphoma cells. As we reviewed a specimen again before Helicobacter pylori eradication therapy, the diagnosis was diffuse large B cell lymphoma because lymphoma cells were large, the MIB1 index was high, and Bcl-6 was positive. He has been doing well without a recurrence. As for a treatment of localized diffuse large B cell lymphoma, chemo-radiotherapy has generally been performed. However, we reported here two cases of gastric diffuse large B cell lymphoma regression that were confirmed after Helicobacter pylori eradication therapy, and CR was maintained without a recurrence.
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