Аннотация
Abstract Background: Article shows a clinical experience with the patient with primary gastric lymphoma, and it shows reduction of the lymphoma condition into the spontaneous remission, after community-acquired pneumonia, which was associated with co-infection of COVID-19 and undefined typical bacterial agent. The positive response happened on the standard antibacterial and basic symptomatically treatment. Case presentation: A 65-years-old woman was admitted by ambulance to the emergency department with sever condition. In time of hospitalization the patient has been diagnosed with primary gastric lymphoma, ulcer form, with signs of ongoing capillary bleeding, chronic bronchitis, diabetes militias type 2 complicated hypoglycaemic condition associated with metformin, thrombocytopenic syndrome, normochromic anaemia. The condition was confirmed by laboratory and instrumental investigation. Conclusion: Article shows extremely positive response up to disappearing of ulcer, which was associated with lymphoproliferative disorder. The condition of that was associated with highly cytokines production with anti-tumor effect.