To the Editor: A 14-year-old boy presented with pallor and asthenia. Laboratory data showed microcytic anemia (Hemoglobin 6.9 g/dL, erythrocytes 4.56 Â 106/μL, mean corpuscular volume 59fl, reticulocytes 72Â109/L, ferritin 1.4 ng/mL, transferrin saturation 1%), microscopic blood and Helicobacter Pylori in stool, and negative markers for celiac disease. Clarithromycin, amoxicillin, and omeprazole, together with oral iron, were prescribed but the boy discontinued the follow-up. One year later, he returned with ...