Treatment sequencing in gastric and nongastric MALT lymphoma. *Lugano (or corresponding Paris/TNM [tumor, node, metastasis]) staging system for gastric MZL. **Endoscopy performed during follow-up is always associated with multiple biopsies of gastric mucosa. A shift should be made to the next treatment step when the patient is symptomatic or in cases of overt progression or deeper invasion within gastric walls. Consider repeating antibiotic therapy if HP positivity is still detected. ***Ann Arbor staging system.