Siewert Rubric • OGJ Tumour TopographyPatient Education GuideAnatomical ClassificationIType IOesophageal AdenocarcinomaIIType IITrue Cardia AdenocarcinomaIIIType IIISubcardial Gastric CancerSelect the topography of the tumour centre relative to the OGJ to visualize the Siewert staging profile.