Radiofrequency Ablation for Barrett Oesophagus With Low Grade Dysplasia

Inclusion Criteria: * BE with certain LGD in at least one endoscopic biopsy sample * BE with maximal length of 12cm (Prague classification ≤ C12) * BE with minimal length of 1cm circumferentially or 3cm in case of a unique zone (Prague classification ≥ C1 or C0M3) * Patients aged between 18 and 80 years * Patients' consent for study enrollment * No contra-indications to general anaesthesia * Patients ability to take PPI oral medication * Patient affiliated to a social security system * No pregnancy and active contraceptions for women in age to procreate * In case of previous endoscopic mucosal resection for HGD in BE: at least one year of surveillance and 2 biopsy series with LGD without HGD Exclusion Criteria: * BE length \> 12cm or \< 1cm circumferentially (\< C1) or \< 3cm focally (\<M3) * HGD or adenocarcinoma needing a specific endoscopic or surgical treatment * Active peptic oesophagitis (Savary III or IV) * Presence of surgical staples on the area to be treated * Radiation oesophagitis of radiotherapy whose field includes the lower oesophagus * previous oesophagus cancer * previous endoscopic destruction treatment such as photodynamic therapy or plasma argon coagulation * previous Heller surgery * oesophagus stenosis * oesophagus varices * oesophagus pathology associated with sclerodermia * Severe coagulation disorders or thrombopenia * Anaesthesia contra-indications (ASA 4) * Hypersensitivity to fluorescein or any component of the fluorescein * Life expectancy \< 2 years * Disability to take PPI oral medication or follow the protocol surveillance Schedule