Gastric tumours are subdivided into those of epithelial and stromal origin. Malignant tumours are more common than benign, with adenocarcinomas being the most common type of malignancy. Rarer gastric malignancies include gastrointestinal stromal tumours (GISTs), lymphomas and neuro-endocrine tumours. Gastric cancer is the sixth most common cancer in Europe and the fourth most common cause of cancer death. Multidisciplinary treatment planning is an essential part of management of these cancers. The only curative treatment option is surgical resection, although this is usually accompanied by perioperative chemotherapy or adjuvant chemoradiotherapy.