Non-invasive Testing for Early oEesophageal Cancer and Dysplasia

This study aims to determine whether a breath test could be used for early detection of oesophageal cancer and Barrett's high grade dysplasia. Patients who are attending for a planned gastroscopy or who are scheduled to undergo elective resection of histologically confirmed early stage oesophageal adenocarcinoma or dysplasia will be approached to provide a breath sample. Multi platform mass spectrometry analysis will be performed to establish volatile biomarkers that can discriminate between early stage (T1) oesophageal cancer/ Hight grade dysplasia from non cancer healthy controls/non dysplastic Barrett's cancer.