Acute cholangitis (ascending cholangitis)Acute pancreatitisAnal fissureAppendicitisBarrett’s oesophagus CholecystitisChronic pancreatitisColorectal cancerDiverticular disease/diverticulitisGallstones and biliary colicGastric cancerGI perforationGastro-oesophageal reflux diseaseHaemorrhoidsHerniasHiatus herniaInflammatory bowel diseaseIntestinal ischaemiaIntestinal obstruction/ileusMeckel’s diverticulumMesenteric adenitisOesophageal cancerPancreatic cancerPeptic ulcer disease and gastritisPerineal abscesses and fistulaePeritonitisPost-surgical carePost-surgical complicationsVolvulus