[Macrocytic megaloblastic anaemia in a patient with Helicobacter pylori infection].

We present 62 yrs old patient in whom megaloblastic anaemia due to vitamin B12 depletion was caused by Helicobacter pylori infection. An eradication treatment with the vitamin B12 supplementation within 7 days resulted in withdrawal of the abnormalities in the blood smear. The inflammation of gastric mucosa with intestine metaplasia is still observed. According to the letters these changes may persist up to 2-3 years after treatment ending.