Variceal haemorrhage occurs from dilated veins (varices) at the junction between the portal and systemic venous systems. Varices tend to be in the distal oesophagus and/or the proximal stomach but isolated varices may be found in the distal stomach, and the large and small intestine.
This is a companion discussion topic for the original article at https://patient.info/doctor/gastroenterology/oesophageal-varices